Finding the Fourth Proportional to 81,657,204.30, 122,485,806.45 and 74,098,932.30
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Solution
The fourth proportional to 81,657,204.30, 122,485,806.45 and 74,098,932.30 is: 111,148,398.45
Step by Step Solution
- Step 1: Write the proportion equation
81,657,204.30 : 122,485,806.45 = 74,098,932.30 : x - Step 2: Convert to fraction form
81,657,204.30/122,485,806.45 = 74,098,932.30/x - Step 3: Cross multiply
81,657,204.30x = 122,485,806.45 × 74,098,932.30 - Step 4: Simplify right side
81,657,204.30x = 9,076,067,479,849,454 - Step 5: Solve for x
x = 9,076,067,479,849,454/81,657,204.30 - Step 6: Final answer
x = 111,148,398.45
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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.