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Finding the Fourth Proportional to 71,327.32, 106,975.52 and 21,394.04

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Solution

The fourth proportional to 71,327.32, 106,975.52 and 21,394.04 is: 32,086.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,327.32 : 106,975.52 = 21,394.04 : x
  2. Step 2: Convert to fraction form
    71,327.32/106,975.52 = 21,394.04/x
  3. Step 3: Cross multiply
    71,327.32x = 106,975.52 × 21,394.04
  4. Step 4: Simplify right side
    71,327.32x = 2,288,638,553.90
  5. Step 5: Solve for x
    x = 2,288,638,553.90/71,327.32
  6. Step 6: Final answer
    x = 32,086.42

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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.