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Finding the Fourth Proportional to 56,472.30, 84,722.85 and 39,864.69

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Solution

The fourth proportional to 56,472.30, 84,722.85 and 39,864.69 is: 59,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,472.30 : 84,722.85 = 39,864.69 : x
  2. Step 2: Convert to fraction form
    56,472.30/84,722.85 = 39,864.69/x
  3. Step 3: Cross multiply
    56,472.30x = 84,722.85 × 39,864.69
  4. Step 4: Simplify right side
    56,472.30x = 3,377,450,151.17
  5. Step 5: Solve for x
    x = 3,377,450,151.17/56,472.30
  6. Step 6: Final answer
    x = 59,807.20

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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.