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Finding the Fourth Proportional to 71,353.38, 107,025.96 and 21,432.37

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Solution

The fourth proportional to 71,353.38, 107,025.96 and 21,432.37 is: 32,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,353.38 : 107,025.96 = 21,432.37 : x
  2. Step 2: Convert to fraction form
    71,353.38/107,025.96 = 21,432.37/x
  3. Step 3: Cross multiply
    71,353.38x = 107,025.96 × 21,432.37
  4. Step 4: Simplify right side
    71,353.38x = 2,293,819,974.33
  5. Step 5: Solve for x
    x = 2,293,819,974.33/71,353.38
  6. Step 6: Final answer
    x = 32,147.32

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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.