Home / 87,708.34-131,561.36-21,147.94

Finding the Fourth Proportional to 87,708.34, 131,561.36 and 21,147.94

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Solution

The fourth proportional to 87,708.34, 131,561.36 and 21,147.94 is: 31,721.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,708.34 : 131,561.36 = 21,147.94 : x
  2. Step 2: Convert to fraction form
    87,708.34/131,561.36 = 21,147.94/x
  3. Step 3: Cross multiply
    87,708.34x = 131,561.36 × 21,147.94
  4. Step 4: Simplify right side
    87,708.34x = 2,782,251,747.60
  5. Step 5: Solve for x
    x = 2,782,251,747.60/87,708.34
  6. Step 6: Final answer
    x = 31,721.63

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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.