Home / 87,620.20-131,430.30-43,253.80

Finding the Fourth Proportional to 87,620.20, 131,430.30 and 43,253.80

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Solution

The fourth proportional to 87,620.20, 131,430.30 and 43,253.80 is: 64,880.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,620.20 : 131,430.30 = 43,253.80 : x
  2. Step 2: Convert to fraction form
    87,620.20/131,430.30 = 43,253.80/x
  3. Step 3: Cross multiply
    87,620.20x = 131,430.30 × 43,253.80
  4. Step 4: Simplify right side
    87,620.20x = 5,684,859,910.14
  5. Step 5: Solve for x
    x = 5,684,859,910.14/87,620.20
  6. Step 6: Final answer
    x = 64,880.70

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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.