Home / 40,982.92-61,431.31-18,778.04

Finding the Fourth Proportional to 40,982.92, 61,431.31 and 18,778.04

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Solution

The fourth proportional to 40,982.92, 61,431.31 and 18,778.04 is: 28,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,982.92 : 61,431.31 = 18,778.04 : x
  2. Step 2: Convert to fraction form
    40,982.92/61,431.31 = 18,778.04/x
  3. Step 3: Cross multiply
    40,982.92x = 61,431.31 × 18,778.04
  4. Step 4: Simplify right side
    40,982.92x = 1,153,559,375.12
  5. Step 5: Solve for x
    x = 1,153,559,375.12/40,982.92
  6. Step 6: Final answer
    x = 28,147.32

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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.