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Finding the Fourth Proportional to 68,758.54, 103,040.52 and 29,275.90

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Solution

The fourth proportional to 68,758.54, 103,040.52 and 29,275.90 is: 43,872.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,758.54 : 103,040.52 = 29,275.90 : x
  2. Step 2: Convert to fraction form
    68,758.54/103,040.52 = 29,275.90/x
  3. Step 3: Cross multiply
    68,758.54x = 103,040.52 × 29,275.90
  4. Step 4: Simplify right side
    68,758.54x = 3,016,603,959.47
  5. Step 5: Solve for x
    x = 3,016,603,959.47/68,758.54
  6. Step 6: Final answer
    x = 43,872.43

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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.