Home / 87,589.28-120,871.20-53,595.20

Finding the Fourth Proportional to 87,589.28, 120,871.20 and 53,595.20

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Solution

The fourth proportional to 87,589.28, 120,871.20 and 53,595.20 is: 73,960.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,589.28 : 120,871.20 = 53,595.20 : x
  2. Step 2: Convert to fraction form
    87,589.28/120,871.20 = 53,595.20/x
  3. Step 3: Cross multiply
    87,589.28x = 120,871.20 × 53,595.20
  4. Step 4: Simplify right side
    87,589.28x = 6,478,116,138.24
  5. Step 5: Solve for x
    x = 6,478,116,138.24/87,589.28
  6. Step 6: Final answer
    x = 73,960.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.