Home / 31,391,499.53-47,088,135.05-8,672,396.78

Finding the Fourth Proportional to 31,391,499.53, 47,088,135.05 and 8,672,396.78

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Solution

The fourth proportional to 31,391,499.53, 47,088,135.05 and 8,672,396.78 is: 13,008,839.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391,499.53 : 47,088,135.05 = 8,672,396.78 : x
  2. Step 2: Convert to fraction form
    31,391,499.53/47,088,135.05 = 8,672,396.78/x
  3. Step 3: Cross multiply
    31,391,499.53x = 47,088,135.05 × 8,672,396.78
  4. Step 4: Simplify right side
    31,391,499.53x = 408,366,990,858,183.56
  5. Step 5: Solve for x
    x = 408,366,990,858,183.56/31,391,499.53
  6. Step 6: Final answer
    x = 13,008,839.88

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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.