Finding the Fourth Proportional to 66,431,754.80, 99,647,632.20 and 57,344,113.70
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Solution
The fourth proportional to 66,431,754.80, 99,647,632.20 and 57,344,113.70 is: 86,016,170.55
Step by Step Solution
- Step 1: Write the proportion equation
66,431,754.80 : 99,647,632.20 = 57,344,113.70 : x - Step 2: Convert to fraction form
66,431,754.80/99,647,632.20 = 57,344,113.70/x - Step 3: Cross multiply
66,431,754.80x = 99,647,632.20 × 57,344,113.70 - Step 4: Simplify right side
66,431,754.80x = 5,714,205,150,812,582 - Step 5: Solve for x
x = 5,714,205,150,812,582/66,431,754.80 - Step 6: Final answer
x = 86,016,170.55
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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.