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Finding the Fourth Proportional to 40,951.75, 61,399.12 and 18,143.22

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Solution

The fourth proportional to 40,951.75, 61,399.12 and 18,143.22 is: 27,202.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,951.75 : 61,399.12 = 18,143.22 : x
  2. Step 2: Convert to fraction form
    40,951.75/61,399.12 = 18,143.22/x
  3. Step 3: Cross multiply
    40,951.75x = 61,399.12 × 18,143.22
  4. Step 4: Simplify right side
    40,951.75x = 1,113,977,741.97
  5. Step 5: Solve for x
    x = 1,113,977,741.97/40,951.75
  6. Step 6: Final answer
    x = 27,202.20

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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.