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Finding the Fourth Proportional to 87,593.76, 131,394 and 30,656.64

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Solution

The fourth proportional to 87,593.76, 131,394 and 30,656.64 is: 45,986.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,593.76 : 131,394 = 30,656.64 : x
  2. Step 2: Convert to fraction form
    87,593.76/131,394 = 30,656.64/x
  3. Step 3: Cross multiply
    87,593.76x = 131,394 × 30,656.64
  4. Step 4: Simplify right side
    87,593.76x = 4,028,098,556.16
  5. Step 5: Solve for x
    x = 4,028,098,556.16/87,593.76
  6. Step 6: Final answer
    x = 45,986.14

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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.