Finding the Fourth Proportional to 66,472,412.01, 91,747,234.09 and 38,979,197.61
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Solution
The fourth proportional to 66,472,412.01, 91,747,234.09 and 38,979,197.61 is: 53,800,267.80
Step by Step Solution
- Step 1: Write the proportion equation
66,472,412.01 : 91,747,234.09 = 38,979,197.61 : x - Step 2: Convert to fraction form
66,472,412.01/91,747,234.09 = 38,979,197.61/x - Step 3: Cross multiply
66,472,412.01x = 91,747,234.09 × 38,979,197.61 - Step 4: Simplify right side
66,472,412.01x = 3,576,233,567,766,530 - Step 5: Solve for x
x = 3,576,233,567,766,530/66,472,412.01 - Step 6: Final answer
x = 53,800,267.80
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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.