Finding the Fourth Proportional to 87,542.96, 120,640.74 and 63,631.76
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Solution
The fourth proportional to 87,542.96, 120,640.74 and 63,631.76 is: 87,689.32
Step by Step Solution
- Step 1: Write the proportion equation
87,542.96 : 120,640.74 = 63,631.76 : x - Step 2: Convert to fraction form
87,542.96/120,640.74 = 63,631.76/x - Step 3: Cross multiply
87,542.96x = 120,640.74 × 63,631.76 - Step 4: Simplify right side
87,542.96x = 7,676,582,613.90 - Step 5: Solve for x
x = 7,676,582,613.90/87,542.96 - Step 6: Final answer
x = 87,689.32
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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.