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Finding the Fourth Proportional to 84,469.67, 126,704.49 and 38,872.77

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Solution

The fourth proportional to 84,469.67, 126,704.49 and 38,872.77 is: 58,309.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,469.67 : 126,704.49 = 38,872.77 : x
  2. Step 2: Convert to fraction form
    84,469.67/126,704.49 = 38,872.77/x
  3. Step 3: Cross multiply
    84,469.67x = 126,704.49 × 38,872.77
  4. Step 4: Simplify right side
    84,469.67x = 4,925,354,497.74
  5. Step 5: Solve for x
    x = 4,925,354,497.74/84,469.67
  6. Step 6: Final answer
    x = 58,309.15

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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.