Home / 87,579.16-131,387.19-28,410.21

Finding the Fourth Proportional to 87,579.16, 131,387.19 and 28,410.21

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Solution

The fourth proportional to 87,579.16, 131,387.19 and 28,410.21 is: 42,621.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,579.16 : 131,387.19 = 28,410.21 : x
  2. Step 2: Convert to fraction form
    87,579.16/131,387.19 = 28,410.21/x
  3. Step 3: Cross multiply
    87,579.16x = 131,387.19 × 28,410.21
  4. Step 4: Simplify right side
    87,579.16x = 3,732,737,659.21
  5. Step 5: Solve for x
    x = 3,732,737,659.21/87,579.16
  6. Step 6: Final answer
    x = 42,621.30

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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.