Finding the Fourth Proportional to 87,425,987.76, 120,658,442.85 and 49,758,310.55
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Solution
The fourth proportional to 87,425,987.76, 120,658,442.85 and 49,758,310.55 is: 68,672,489.99
Step by Step Solution
- Step 1: Write the proportion equation
87,425,987.76 : 120,658,442.85 = 49,758,310.55 : x - Step 2: Convert to fraction form
87,425,987.76/120,658,442.85 = 49,758,310.55/x - Step 3: Cross multiply
87,425,987.76x = 120,658,442.85 × 49,758,310.55 - Step 4: Simplify right side
87,425,987.76x = 6,003,760,269,206,435 - Step 5: Solve for x
x = 6,003,760,269,206,435/87,425,987.76 - Step 6: Final answer
x = 68,672,489.99
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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.