Home / 87,878.10-131,904.64-48,453.78

Finding the Fourth Proportional to 87,878.10, 131,904.64 and 48,453.78

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Solution

The fourth proportional to 87,878.10, 131,904.64 and 48,453.78 is: 72,728.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,878.10 : 131,904.64 = 48,453.78 : x
  2. Step 2: Convert to fraction form
    87,878.10/131,904.64 = 48,453.78/x
  3. Step 3: Cross multiply
    87,878.10x = 131,904.64 × 48,453.78
  4. Step 4: Simplify right side
    87,878.10x = 6,391,278,407.54
  5. Step 5: Solve for x
    x = 6,391,278,407.54/87,878.10
  6. Step 6: Final answer
    x = 72,728.91

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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.