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Finding the Fourth Proportional to 67,914.78, 101,877.79 and 21,167.66

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Solution

The fourth proportional to 67,914.78, 101,877.79 and 21,167.66 is: 31,753.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,914.78 : 101,877.79 = 21,167.66 : x
  2. Step 2: Convert to fraction form
    67,914.78/101,877.79 = 21,167.66/x
  3. Step 3: Cross multiply
    67,914.78x = 101,877.79 × 21,167.66
  4. Step 4: Simplify right side
    67,914.78x = 2,156,513,910.88
  5. Step 5: Solve for x
    x = 2,156,513,910.88/67,914.78
  6. Step 6: Final answer
    x = 31,753.23

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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.