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Finding the Fourth Proportional to 71,391.87, 107,093.11 and 21,467.97

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Solution

The fourth proportional to 71,391.87, 107,093.11 and 21,467.97 is: 32,203.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,391.87 : 107,093.11 = 21,467.97 : x
  2. Step 2: Convert to fraction form
    71,391.87/107,093.11 = 21,467.97/x
  3. Step 3: Cross multiply
    71,391.87x = 107,093.11 × 21,467.97
  4. Step 4: Simplify right side
    71,391.87x = 2,299,071,083.55
  5. Step 5: Solve for x
    x = 2,299,071,083.55/71,391.87
  6. Step 6: Final answer
    x = 32,203.54

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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.