Question 1114758
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<pre>
The equilibrium condition on a seesaw is


{{{W[1]*d[1]}}} = {{{W[2]*d[2]}}},


where W is the weight,  d is the distance from the fulcrum and "1" and "2" are indexes.


In your case  45*6 = 60*x,   which gives


x = {{{(45*6)/60}}} = 4.5 ft.
</pre>

See the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF = http://www.algebra.com/algebra/homework/proportions/lessons/Using-proportions-to-solve-word-problems-in-Physics.lesson>Using proportions to solve word problems in Physics</A> 

in this site.