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Finding the Fourth Proportional to 87,668.74, 131,419.86 and 28,462.96

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Solution

The fourth proportional to 87,668.74, 131,419.86 and 28,462.96 is: 42,667.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,668.74 : 131,419.86 = 28,462.96 : x
  2. Step 2: Convert to fraction form
    87,668.74/131,419.86 = 28,462.96/x
  3. Step 3: Cross multiply
    87,668.74x = 131,419.86 × 28,462.96
  4. Step 4: Simplify right side
    87,668.74x = 3,740,598,218.39
  5. Step 5: Solve for x
    x = 3,740,598,218.39/87,668.74
  6. Step 6: Final answer
    x = 42,667.41

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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.