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Finding the Fourth Proportional to 68,304.70, 102,451.29 and 38,629.18

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Solution

The fourth proportional to 68,304.70, 102,451.29 and 38,629.18 is: 57,940.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,304.70 : 102,451.29 = 38,629.18 : x
  2. Step 2: Convert to fraction form
    68,304.70/102,451.29 = 38,629.18/x
  3. Step 3: Cross multiply
    68,304.70x = 102,451.29 × 38,629.18
  4. Step 4: Simplify right side
    68,304.70x = 3,957,609,322.64
  5. Step 5: Solve for x
    x = 3,957,609,322.64/68,304.70
  6. Step 6: Final answer
    x = 57,940.51

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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.