Home / 87,731.96-131,568.47-28,553.71

Finding the Fourth Proportional to 87,731.96, 131,568.47 and 28,553.71

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Solution

The fourth proportional to 87,731.96, 131,568.47 and 28,553.71 is: 42,820.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,731.96 : 131,568.47 = 28,553.71 : x
  2. Step 2: Convert to fraction form
    87,731.96/131,568.47 = 28,553.71/x
  3. Step 3: Cross multiply
    87,731.96x = 131,568.47 × 28,553.71
  4. Step 4: Simplify right side
    87,731.96x = 3,756,767,465.83
  5. Step 5: Solve for x
    x = 3,756,767,465.83/87,731.96
  6. Step 6: Final answer
    x = 42,820.97

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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.