Finding the Fourth Proportional to 77,901.92, 107,512.68 and 47,707.28
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Solution
The fourth proportional to 77,901.92, 107,512.68 and 47,707.28 is: 65,840.96
Step by Step Solution
- Step 1: Write the proportion equation
77,901.92 : 107,512.68 = 47,707.28 : x - Step 2: Convert to fraction form
77,901.92/107,512.68 = 47,707.28/x - Step 3: Cross multiply
77,901.92x = 107,512.68 × 47,707.28 - Step 4: Simplify right side
77,901.92x = 5,129,137,528.31 - Step 5: Solve for x
x = 5,129,137,528.31/77,901.92 - Step 6: Final answer
x = 65,840.96
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.