Finding the Fourth Proportional to 66,491,621.80, 99,737,432.70 and 40,982,453.80
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Solution
The fourth proportional to 66,491,621.80, 99,737,432.70 and 40,982,453.80 is: 61,473,680.70
Step by Step Solution
- Step 1: Write the proportion equation
66,491,621.80 : 99,737,432.70 = 40,982,453.80 : x - Step 2: Convert to fraction form
66,491,621.80/99,737,432.70 = 40,982,453.80/x - Step 3: Cross multiply
66,491,621.80x = 99,737,432.70 × 40,982,453.80 - Step 4: Simplify right side
66,491,621.80x = 4,087,484,727,758,359 - Step 5: Solve for x
x = 4,087,484,727,758,359/66,491,621.80 - Step 6: Final answer
x = 61,473,680.70
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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.