Home / 87,727.14-131,589.49-21,166.71

Finding the Fourth Proportional to 87,727.14, 131,589.49 and 21,166.71

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Solution

The fourth proportional to 87,727.14, 131,589.49 and 21,166.71 is: 31,749.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,727.14 : 131,589.49 = 21,166.71 : x
  2. Step 2: Convert to fraction form
    87,727.14/131,589.49 = 21,166.71/x
  3. Step 3: Cross multiply
    87,727.14x = 131,589.49 × 21,166.71
  4. Step 4: Simplify right side
    87,727.14x = 2,785,316,520.96
  5. Step 5: Solve for x
    x = 2,785,316,520.96/87,727.14
  6. Step 6: Final answer
    x = 31,749.77

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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.