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Finding the Fourth Proportional to 75,079.88, 103,610.24 and 43,248.78

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Solution

The fourth proportional to 75,079.88, 103,610.24 and 43,248.78 is: 59,683.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,079.88 : 103,610.24 = 43,248.78 : x
  2. Step 2: Convert to fraction form
    75,079.88/103,610.24 = 43,248.78/x
  3. Step 3: Cross multiply
    75,079.88x = 103,610.24 × 43,248.78
  4. Step 4: Simplify right side
    75,079.88x = 4,481,016,211.75
  5. Step 5: Solve for x
    x = 4,481,016,211.75/75,079.88
  6. Step 6: Final answer
    x = 59,683.32

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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.