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Finding the Fourth Proportional to 71,397.59, 98,540.35 and 54,374.63

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Solution

The fourth proportional to 71,397.59, 98,540.35 and 54,374.63 is: 75,045.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,397.59 : 98,540.35 = 54,374.63 : x
  2. Step 2: Convert to fraction form
    71,397.59/98,540.35 = 54,374.63/x
  3. Step 3: Cross multiply
    71,397.59x = 98,540.35 × 54,374.63
  4. Step 4: Simplify right side
    71,397.59x = 5,358,094,442.68
  5. Step 5: Solve for x
    x = 5,358,094,442.68/71,397.59
  6. Step 6: Final answer
    x = 75,045.88

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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.