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Finding the Fourth Proportional to 40,604.30, 60,913.01 and 12,517.78

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Solution

The fourth proportional to 40,604.30, 60,913.01 and 12,517.78 is: 18,778.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,604.30 : 60,913.01 = 12,517.78 : x
  2. Step 2: Convert to fraction form
    40,604.30/60,913.01 = 12,517.78/x
  3. Step 3: Cross multiply
    40,604.30x = 60,913.01 × 12,517.78
  4. Step 4: Simplify right side
    40,604.30x = 762,495,658.32
  5. Step 5: Solve for x
    x = 762,495,658.32/40,604.30
  6. Step 6: Final answer
    x = 18,778.69

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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.