Home / 87,890.82-131,834.97-21,331.50

Finding the Fourth Proportional to 87,890.82, 131,834.97 and 21,331.50

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Solution

The fourth proportional to 87,890.82, 131,834.97 and 21,331.50 is: 31,996.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,890.82 : 131,834.97 = 21,331.50 : x
  2. Step 2: Convert to fraction form
    87,890.82/131,834.97 = 21,331.50/x
  3. Step 3: Cross multiply
    87,890.82x = 131,834.97 × 21,331.50
  4. Step 4: Simplify right side
    87,890.82x = 2,812,237,662.56
  5. Step 5: Solve for x
    x = 2,812,237,662.56/87,890.82
  6. Step 6: Final answer
    x = 31,996.94

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1.5x scale

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.