Home / 87,282.40-130,621.20-52,247.20

Finding the Fourth Proportional to 87,282.40, 130,621.20 and 52,247.20

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Solution

The fourth proportional to 87,282.40, 130,621.20 and 52,247.20 is: 78,189.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,282.40 : 130,621.20 = 52,247.20 : x
  2. Step 2: Convert to fraction form
    87,282.40/130,621.20 = 52,247.20/x
  3. Step 3: Cross multiply
    87,282.40x = 130,621.20 × 52,247.20
  4. Step 4: Simplify right side
    87,282.40x = 6,824,591,960.64
  5. Step 5: Solve for x
    x = 6,824,591,960.64/87,282.40
  6. Step 6: Final answer
    x = 78,189.78

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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.