Home / 87,660.20-131,490.30-43,293.80

Finding the Fourth Proportional to 87,660.20, 131,490.30 and 43,293.80

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Solution

The fourth proportional to 87,660.20, 131,490.30 and 43,293.80 is: 64,940.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,660.20 : 131,490.30 = 43,293.80 : x
  2. Step 2: Convert to fraction form
    87,660.20/131,490.30 = 43,293.80/x
  3. Step 3: Cross multiply
    87,660.20x = 131,490.30 × 43,293.80
  4. Step 4: Simplify right side
    87,660.20x = 5,692,714,750.14
  5. Step 5: Solve for x
    x = 5,692,714,750.14/87,660.20
  6. Step 6: Final answer
    x = 64,940.70

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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.