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Finding the Fourth Proportional to 68,348.48, 94,321.68 and 38,540.48

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Solution

The fourth proportional to 68,348.48, 94,321.68 and 38,540.48 is: 53,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,348.48 : 94,321.68 = 38,540.48 : x
  2. Step 2: Convert to fraction form
    68,348.48/94,321.68 = 38,540.48/x
  3. Step 3: Cross multiply
    68,348.48x = 94,321.68 × 38,540.48
  4. Step 4: Simplify right side
    68,348.48x = 3,635,202,821.61
  5. Step 5: Solve for x
    x = 3,635,202,821.61/68,348.48
  6. Step 6: Final answer
    x = 53,186.30

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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.