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Finding the Fourth Proportional to 69,872.97, 96,419.83 and 39,658.91

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Solution

The fourth proportional to 69,872.97, 96,419.83 and 39,658.91 is: 54,726.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,872.97 : 96,419.83 = 39,658.91 : x
  2. Step 2: Convert to fraction form
    69,872.97/96,419.83 = 39,658.91/x
  3. Step 3: Cross multiply
    69,872.97x = 96,419.83 × 39,658.91
  4. Step 4: Simplify right side
    69,872.97x = 3,823,904,778.94
  5. Step 5: Solve for x
    x = 3,823,904,778.94/69,872.97
  6. Step 6: Final answer
    x = 54,726.53

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1.5x scale

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.