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Finding the Fourth Proportional to 75,143.88, 103,610.52 and 59,987.97

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Solution

The fourth proportional to 75,143.88, 103,610.52 and 59,987.97 is: 82,713.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,143.88 : 103,610.52 = 59,987.97 : x
  2. Step 2: Convert to fraction form
    75,143.88/103,610.52 = 59,987.97/x
  3. Step 3: Cross multiply
    75,143.88x = 103,610.52 × 59,987.97
  4. Step 4: Simplify right side
    75,143.88x = 6,215,384,765.44
  5. Step 5: Solve for x
    x = 6,215,384,765.44/75,143.88
  6. Step 6: Final answer
    x = 82,713.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.