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Finding the Fourth Proportional to 68,072.57, 93,874.95 and 45,065.97

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Solution

The fourth proportional to 68,072.57, 93,874.95 and 45,065.97 is: 62,147.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,072.57 : 93,874.95 = 45,065.97 : x
  2. Step 2: Convert to fraction form
    68,072.57/93,874.95 = 45,065.97/x
  3. Step 3: Cross multiply
    68,072.57x = 93,874.95 × 45,065.97
  4. Step 4: Simplify right side
    68,072.57x = 4,230,565,680.45
  5. Step 5: Solve for x
    x = 4,230,565,680.45/68,072.57
  6. Step 6: Final answer
    x = 62,147.88

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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.