Home / 87,819.48-131,729.55-21,259.49

Finding the Fourth Proportional to 87,819.48, 131,729.55 and 21,259.49

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Solution

The fourth proportional to 87,819.48, 131,729.55 and 21,259.49 is: 31,889.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,819.48 : 131,729.55 = 21,259.49 : x
  2. Step 2: Convert to fraction form
    87,819.48/131,729.55 = 21,259.49/x
  3. Step 3: Cross multiply
    87,819.48x = 131,729.55 × 21,259.49
  4. Step 4: Simplify right side
    87,819.48x = 2,800,503,050.93
  5. Step 5: Solve for x
    x = 2,800,503,050.93/87,819.48
  6. Step 6: Final answer
    x = 31,889.31

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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.