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Finding the Fourth Proportional to 40,486.14, 60,731.04 and 12,404.15

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Solution

The fourth proportional to 40,486.14, 60,731.04 and 12,404.15 is: 18,606.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,486.14 : 60,731.04 = 12,404.15 : x
  2. Step 2: Convert to fraction form
    40,486.14/60,731.04 = 12,404.15/x
  3. Step 3: Cross multiply
    40,486.14x = 60,731.04 × 12,404.15
  4. Step 4: Simplify right side
    40,486.14x = 753,316,626.16
  5. Step 5: Solve for x
    x = 753,316,626.16/40,486.14
  6. Step 6: Final answer
    x = 18,606.78

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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.