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Finding the Fourth Proportional to 71,501.78, 107,239.91 and 26,517.94

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Solution

The fourth proportional to 71,501.78, 107,239.91 and 26,517.94 is: 39,772.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,501.78 : 107,239.91 = 26,517.94 : x
  2. Step 2: Convert to fraction form
    71,501.78/107,239.91 = 26,517.94/x
  3. Step 3: Cross multiply
    71,501.78x = 107,239.91 × 26,517.94
  4. Step 4: Simplify right side
    71,501.78x = 2,843,781,098.30
  5. Step 5: Solve for x
    x = 2,843,781,098.30/71,501.78
  6. Step 6: Final answer
    x = 39,772.17

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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.