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Finding the Fourth Proportional to 52,472.38, 78,710.49 and 21,306.94

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Solution

The fourth proportional to 52,472.38, 78,710.49 and 21,306.94 is: 31,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,472.38 : 78,710.49 = 21,306.94 : x
  2. Step 2: Convert to fraction form
    52,472.38/78,710.49 = 21,306.94/x
  3. Step 3: Cross multiply
    52,472.38x = 78,710.49 × 21,306.94
  4. Step 4: Simplify right side
    52,472.38x = 1,677,079,687.80
  5. Step 5: Solve for x
    x = 1,677,079,687.80/52,472.38
  6. Step 6: Final answer
    x = 31,961.19

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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.