Finding the Fourth Proportional to 81,488,374.70, 122,232,562.05 and 20,904,100.70
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Solution
The fourth proportional to 81,488,374.70, 122,232,562.05 and 20,904,100.70 is: 31,356,151.05
Step by Step Solution
- Step 1: Write the proportion equation
81,488,374.70 : 122,232,562.05 = 20,904,100.70 : x - Step 2: Convert to fraction form
81,488,374.70/122,232,562.05 = 20,904,100.70/x - Step 3: Cross multiply
81,488,374.70x = 122,232,562.05 × 20,904,100.70 - Step 4: Simplify right side
81,488,374.70x = 2,555,161,785,912,198.50 - Step 5: Solve for x
x = 2,555,161,785,912,198.50/81,488,374.70 - Step 6: Final answer
x = 31,356,151.05
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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.