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Finding the Fourth Proportional to 68,393.97, 102,704.42 and 42,264.79

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Solution

The fourth proportional to 68,393.97, 102,704.42 and 42,264.79 is: 63,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,393.97 : 102,704.42 = 42,264.79 : x
  2. Step 2: Convert to fraction form
    68,393.97/102,704.42 = 42,264.79/x
  3. Step 3: Cross multiply
    68,393.97x = 102,704.42 × 42,264.79
  4. Step 4: Simplify right side
    68,393.97x = 4,340,780,592.27
  5. Step 5: Solve for x
    x = 4,340,780,592.27/68,393.97
  6. Step 6: Final answer
    x = 63,467.30

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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.