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Finding the Fourth Proportional to 87,812.80, 131,524.80 and 72,260.80

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Solution

The fourth proportional to 87,812.80, 131,524.80 and 72,260.80 is: 108,231.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,812.80 : 131,524.80 = 72,260.80 : x
  2. Step 2: Convert to fraction form
    87,812.80/131,524.80 = 72,260.80/x
  3. Step 3: Cross multiply
    87,812.80x = 131,524.80 × 72,260.80
  4. Step 4: Simplify right side
    87,812.80x = 9,504,087,267.84
  5. Step 5: Solve for x
    x = 9,504,087,267.84/87,812.80
  6. Step 6: Final answer
    x = 108,231.23

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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.