Extending formulae in Excel pivot

Was trying to extend formulae in a spreadsheet pivot.
Example, a1=b1/c1
entending this to a2=b2/c2 and so on...

Is there any way other than the manual entry.
The formulae used in the spreadsheet are shown in the list of formulae, can the reverse be done somehow
Basically, want to drag the formula, and use it in the pivot.

Thanks,
~Sayan

Oh look its another Exact Copy of your other Post.

Don't multi post.....It achieves nothing!

Celtic_Avenger