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Finding the Fourth Proportional to 40,494.62, 60,760.39 and 20,787.03

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Solution

The fourth proportional to 40,494.62, 60,760.39 and 20,787.03 is: 31,190.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,494.62 : 60,760.39 = 20,787.03 : x
  2. Step 2: Convert to fraction form
    40,494.62/60,760.39 = 20,787.03/x
  3. Step 3: Cross multiply
    40,494.62x = 60,760.39 × 20,787.03
  4. Step 4: Simplify right side
    40,494.62x = 1,263,028,101.71
  5. Step 5: Solve for x
    x = 1,263,028,101.71/40,494.62
  6. Step 6: Final answer
    x = 31,190.02

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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.