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Finding the Fourth Proportional to 68,691.65, 103,584.02 and 67,754.88

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Solution

The fourth proportional to 68,691.65, 103,584.02 and 67,754.88 is: 102,171.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,691.65 : 103,584.02 = 67,754.88 : x
  2. Step 2: Convert to fraction form
    68,691.65/103,584.02 = 67,754.88/x
  3. Step 3: Cross multiply
    68,691.65x = 103,584.02 × 67,754.88
  4. Step 4: Simplify right side
    68,691.65x = 7,018,322,506.24
  5. Step 5: Solve for x
    x = 7,018,322,506.24/68,691.65
  6. Step 6: Final answer
    x = 102,171.41

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.