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Finding the Fourth Proportional to 40,874.68, 61,309.50 and 12,793.96

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Solution

The fourth proportional to 40,874.68, 61,309.50 and 12,793.96 is: 19,190.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,874.68 : 61,309.50 = 12,793.96 : x
  2. Step 2: Convert to fraction form
    40,874.68/61,309.50 = 12,793.96/x
  3. Step 3: Cross multiply
    40,874.68x = 61,309.50 × 12,793.96
  4. Step 4: Simplify right side
    40,874.68x = 784,391,290.62
  5. Step 5: Solve for x
    x = 784,391,290.62/40,874.68
  6. Step 6: Final answer
    x = 19,190.15

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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.