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Finding the Fourth Proportional to 68,426.92, 94,425.54 and 38,617

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Solution

The fourth proportional to 68,426.92, 94,425.54 and 38,617 is: 53,289.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,426.92 : 94,425.54 = 38,617 : x
  2. Step 2: Convert to fraction form
    68,426.92/94,425.54 = 38,617/x
  3. Step 3: Cross multiply
    68,426.92x = 94,425.54 × 38,617
  4. Step 4: Simplify right side
    68,426.92x = 3,646,431,078.18
  5. Step 5: Solve for x
    x = 3,646,431,078.18/68,426.92
  6. Step 6: Final answer
    x = 53,289.42

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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.