Home / 87,690.96-131,550.21-28,512.79

Finding the Fourth Proportional to 87,690.96, 131,550.21 and 28,512.79

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Solution

The fourth proportional to 87,690.96, 131,550.21 and 28,512.79 is: 42,773.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.96 : 131,550.21 = 28,512.79 : x
  2. Step 2: Convert to fraction form
    87,690.96/131,550.21 = 28,512.79/x
  3. Step 3: Cross multiply
    87,690.96x = 131,550.21 × 28,512.79
  4. Step 4: Simplify right side
    87,690.96x = 3,750,863,183.31
  5. Step 5: Solve for x
    x = 3,750,863,183.31/87,690.96
  6. Step 6: Final answer
    x = 42,773.66

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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.