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Finding the Fourth Proportional to 40,189.25, 60,321.09 and 20,482.49

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Solution

The fourth proportional to 40,189.25, 60,321.09 and 20,482.49 is: 30,742.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,189.25 : 60,321.09 = 20,482.49 : x
  2. Step 2: Convert to fraction form
    40,189.25/60,321.09 = 20,482.49/x
  3. Step 3: Cross multiply
    40,189.25x = 60,321.09 × 20,482.49
  4. Step 4: Simplify right side
    40,189.25x = 1,235,526,122.71
  5. Step 5: Solve for x
    x = 1,235,526,122.71/40,189.25
  6. Step 6: Final answer
    x = 30,742.70

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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.