Finding the Fourth Proportional to 81,394,737.20, 122,092,105.80 and 30,266,176.40
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Solution
The fourth proportional to 81,394,737.20, 122,092,105.80 and 30,266,176.40 is: 45,399,264.60
Step by Step Solution
- Step 1: Write the proportion equation
81,394,737.20 : 122,092,105.80 = 30,266,176.40 : x - Step 2: Convert to fraction form
81,394,737.20/122,092,105.80 = 30,266,176.40/x - Step 3: Cross multiply
81,394,737.20x = 122,092,105.80 × 30,266,176.40 - Step 4: Simplify right side
81,394,737.20x = 3,695,261,211,190,263 - Step 5: Solve for x
x = 3,695,261,211,190,263/81,394,737.20 - Step 6: Final answer
x = 45,399,264.60
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1.5x scale
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.