excel formula

[hiya5150]

can someone tell me how to write the following formula

a1+b1 * 5%
+ (a1+b1*5%)* 4%
+ (a1+b1*5%*4%)*3.6%
etc.

i'm trying to get a total that contains several percentage increases ONE ON TOP OF THE OTHER (piggyback)

please help

 

[Rams06]

This is the proper formula

=(a1+b1) * 5%
=((a1+b1)*5%)* 4%
=(((a1+b1)*5%)*4%)*3.6%
etc....etc. Keep putting ( ) around the next percentages (until infinity)

Hope it works for you......

 

[hiya5150]

that's good. but since i want to use if more than once, and for clarity purposes, i have field a1 that says 5% and field b1 that says 20,500. in a new field i type a1+b1 and instead of getting 21,525.00, the computer treats my 5% as .05 and gives me a total of 20,500.05. the reason i'm using + rather than * is because otherwise, i'm not getting the amount piggyback, in otherwords once percentage ON TOP OF THE OTHER

 

[bluedragon2]

=B1+(A1*B1)



[Blue]Blue[/Blue] [Dragon]

If I wasn't Blue, I would just be a Dragon...

 

[SkipVought]

You stated "percentage increases ".

If you want to INCREASE somevalue by 5%...
[tt]
=somevalue * 1.05
[/tt]


Skip,

_{[red]Be advised:[/red] When transmitting sheet music...
If it ain't baroque, don't fax it!}

 

[Loomah]

An alternative to bluedragon's solution is
=B1*(1+A1)

;-)

If a man says something and there are no women there to hear him, is he still wrong?
How do I get the best answers?​

 

[Rams06]

I misunderstood your first question..... i thought you were taking percentages * percentages * percentages.... if you adding your initial amount to a percentage increase then the proper formula for the clarified scenario would be:
=A1*(1+B1)
Where A1= initial amount and B1= percentage increase. (You add a 1 to the B1 because that is what you are Essentially saying ... add the percentage increase to my initial amount).

 

[hiya5150]

thanks y'all!

the first one =b1*(1+a1) works!

it's a beautiful thing.