Finding the Fourth Proportional to 86,680.70, 129,733.05 and 62,920.70
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Solution
The fourth proportional to 86,680.70, 129,733.05 and 62,920.70 is: 94,171.99
Step by Step Solution
- Step 1: Write the proportion equation
86,680.70 : 129,733.05 = 62,920.70 : x - Step 2: Convert to fraction form
86,680.70/129,733.05 = 62,920.70/x - Step 3: Cross multiply
86,680.70x = 129,733.05 × 62,920.70 - Step 4: Simplify right side
86,680.70x = 8,162,894,319.14 - Step 5: Solve for x
x = 8,162,894,319.14/86,680.70 - Step 6: Final answer
x = 94,171.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.