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Finding the Fourth Proportional to 89,998.40, 135,046.20 and 40,086.20

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Solution

The fourth proportional to 89,998.40, 135,046.20 and 40,086.20 is: 60,150.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,998.40 : 135,046.20 = 40,086.20 : x
  2. Step 2: Convert to fraction form
    89,998.40/135,046.20 = 40,086.20/x
  3. Step 3: Cross multiply
    89,998.40x = 135,046.20 × 40,086.20
  4. Step 4: Simplify right side
    89,998.40x = 5,413,488,982.44
  5. Step 5: Solve for x
    x = 5,413,488,982.44/89,998.40
  6. Step 6: Final answer
    x = 60,150.95

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1.5x scale

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.