Home / 87,397.15-131,067.94-28,219.06

Finding the Fourth Proportional to 87,397.15, 131,067.94 and 28,219.06

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Solution

The fourth proportional to 87,397.15, 131,067.94 and 28,219.06 is: 42,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,397.15 : 131,067.94 = 28,219.06 : x
  2. Step 2: Convert to fraction form
    87,397.15/131,067.94 = 28,219.06/x
  3. Step 3: Cross multiply
    87,397.15x = 131,067.94 × 28,219.06
  4. Step 4: Simplify right side
    87,397.15x = 3,698,614,062.94
  5. Step 5: Solve for x
    x = 3,698,614,062.94/87,397.15
  6. Step 6: Final answer
    x = 42,319.62

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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.