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Finding the Fourth Proportional to 77,147.56, 115,719.10 and 24,560.20

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Solution

The fourth proportional to 77,147.56, 115,719.10 and 24,560.20 is: 36,839.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,147.56 : 115,719.10 = 24,560.20 : x
  2. Step 2: Convert to fraction form
    77,147.56/115,719.10 = 24,560.20/x
  3. Step 3: Cross multiply
    77,147.56x = 115,719.10 × 24,560.20
  4. Step 4: Simplify right side
    77,147.56x = 2,842,084,239.82
  5. Step 5: Solve for x
    x = 2,842,084,239.82/77,147.56
  6. Step 6: Final answer
    x = 36,839.59

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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.