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Finding the Fourth Proportional to 92,489.40, 138,734.10 and 40,001.40

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Solution

The fourth proportional to 92,489.40, 138,734.10 and 40,001.40 is: 60,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,489.40 : 138,734.10 = 40,001.40 : x
  2. Step 2: Convert to fraction form
    92,489.40/138,734.10 = 40,001.40/x
  3. Step 3: Cross multiply
    92,489.40x = 138,734.10 × 40,001.40
  4. Step 4: Simplify right side
    92,489.40x = 5,549,558,227.74
  5. Step 5: Solve for x
    x = 5,549,558,227.74/92,489.40
  6. Step 6: Final answer
    x = 60,002.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.