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Finding the Fourth Proportional to 40,446.30, 60,672.15 and 13,791.90

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Solution

The fourth proportional to 40,446.30, 60,672.15 and 13,791.90 is: 20,688.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,446.30 : 60,672.15 = 13,791.90 : x
  2. Step 2: Convert to fraction form
    40,446.30/60,672.15 = 13,791.90/x
  3. Step 3: Cross multiply
    40,446.30x = 60,672.15 × 13,791.90
  4. Step 4: Simplify right side
    40,446.30x = 836,784,225.59
  5. Step 5: Solve for x
    x = 836,784,225.59/40,446.30
  6. Step 6: Final answer
    x = 20,688.77

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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.