Finding the Fourth Proportional to 81,566,420.80, 122,349,631.20 and 49,317,793.60
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Solution
The fourth proportional to 81,566,420.80, 122,349,631.20 and 49,317,793.60 is: 73,976,690.40
Step by Step Solution
- Step 1: Write the proportion equation
81,566,420.80 : 122,349,631.20 = 49,317,793.60 : x - Step 2: Convert to fraction form
81,566,420.80/122,349,631.20 = 49,317,793.60/x - Step 3: Cross multiply
81,566,420.80x = 122,349,631.20 × 49,317,793.60 - Step 4: Simplify right side
81,566,420.80x = 6,034,013,858,557,721 - Step 5: Solve for x
x = 6,034,013,858,557,721/81,566,420.80 - Step 6: Final answer
x = 73,976,690.40
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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.