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Finding the Fourth Proportional to 68,625.20, 102,937.80 and 67,458.80

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Solution

The fourth proportional to 68,625.20, 102,937.80 and 67,458.80 is: 101,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,625.20 : 102,937.80 = 67,458.80 : x
  2. Step 2: Convert to fraction form
    68,625.20/102,937.80 = 67,458.80/x
  3. Step 3: Cross multiply
    68,625.20x = 102,937.80 × 67,458.80
  4. Step 4: Simplify right side
    68,625.20x = 6,944,060,462.64
  5. Step 5: Solve for x
    x = 6,944,060,462.64/68,625.20
  6. Step 6: Final answer
    x = 101,188.20

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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.