Home / 87,720.20-131,581.56-28,556.24

Finding the Fourth Proportional to 87,720.20, 131,581.56 and 28,556.24

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Solution

The fourth proportional to 87,720.20, 131,581.56 and 28,556.24 is: 42,834.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,720.20 : 131,581.56 = 28,556.24 : x
  2. Step 2: Convert to fraction form
    87,720.20/131,581.56 = 28,556.24/x
  3. Step 3: Cross multiply
    87,720.20x = 131,581.56 × 28,556.24
  4. Step 4: Simplify right side
    87,720.20x = 3,757,474,606.93
  5. Step 5: Solve for x
    x = 3,757,474,606.93/87,720.20
  6. Step 6: Final answer
    x = 42,834.77

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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.