Home / 51,402.53-77,099.11-18,120.85

Finding the Fourth Proportional to 51,402.53, 77,099.11 and 18,120.85

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Solution

The fourth proportional to 51,402.53, 77,099.11 and 18,120.85 is: 27,179.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,402.53 : 77,099.11 = 18,120.85 : x
  2. Step 2: Convert to fraction form
    51,402.53/77,099.11 = 18,120.85/x
  3. Step 3: Cross multiply
    51,402.53x = 77,099.11 × 18,120.85
  4. Step 4: Simplify right side
    51,402.53x = 1,397,101,169.39
  5. Step 5: Solve for x
    x = 1,397,101,169.39/51,402.53
  6. Step 6: Final answer
    x = 27,179.62

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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.