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Finding the Fourth Proportional to 68,500, 94,537.68 and 38,693.92

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Solution

The fourth proportional to 68,500, 94,537.68 and 38,693.92 is: 53,401.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,500 : 94,537.68 = 38,693.92 : x
  2. Step 2: Convert to fraction form
    68,500/94,537.68 = 38,693.92/x
  3. Step 3: Cross multiply
    68,500x = 94,537.68 × 38,693.92
  4. Step 4: Simplify right side
    68,500x = 3,658,033,426.91
  5. Step 5: Solve for x
    x = 3,658,033,426.91/68,500
  6. Step 6: Final answer
    x = 53,401.95

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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.