Home / 87,942.70-131,881.72-30,223.55

Finding the Fourth Proportional to 87,942.70, 131,881.72 and 30,223.55

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Solution

The fourth proportional to 87,942.70, 131,881.72 and 30,223.55 is: 45,324.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,942.70 : 131,881.72 = 30,223.55 : x
  2. Step 2: Convert to fraction form
    87,942.70/131,881.72 = 30,223.55/x
  3. Step 3: Cross multiply
    87,942.70x = 131,881.72 × 30,223.55
  4. Step 4: Simplify right side
    87,942.70x = 3,985,934,012.65
  5. Step 5: Solve for x
    x = 3,985,934,012.65/87,942.70
  6. Step 6: Final answer
    x = 45,324.22

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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.