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Finding the Fourth Proportional to 68,781.12, 94,922.48 and 38,568.38

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Solution

The fourth proportional to 68,781.12, 94,922.48 and 38,568.38 is: 53,226.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,781.12 : 94,922.48 = 38,568.38 : x
  2. Step 2: Convert to fraction form
    68,781.12/94,922.48 = 38,568.38/x
  3. Step 3: Cross multiply
    68,781.12x = 94,922.48 × 38,568.38
  4. Step 4: Simplify right side
    68,781.12x = 3,661,005,611.73
  5. Step 5: Solve for x
    x = 3,661,005,611.73/68,781.12
  6. Step 6: Final answer
    x = 53,226.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.