Finding the Fourth Proportional to 85,757,658.17, 128,299,754.00 and 66,178,965.71
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Solution
The fourth proportional to 85,757,658.17, 128,299,754.00 and 66,178,965.71 is: 99,008,592.37
Step by Step Solution
- Step 1: Write the proportion equation
85,757,658.17 : 128,299,754.00 = 66,178,965.71 : x - Step 2: Convert to fraction form
85,757,658.17/128,299,754.00 = 66,178,965.71/x - Step 3: Cross multiply
85,757,658.17x = 128,299,754.00 × 66,178,965.71 - Step 4: Simplify right side
85,757,658.17x = 8,490,745,019,595,042 - Step 5: Solve for x
x = 8,490,745,019,595,042/85,757,658.17 - Step 6: Final answer
x = 99,008,592.37
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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.