Home / 87,639.66-120,949.06-49,913.90

Finding the Fourth Proportional to 87,639.66, 120,949.06 and 49,913.90

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Solution

The fourth proportional to 87,639.66, 120,949.06 and 49,913.90 is: 68,884.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,639.66 : 120,949.06 = 49,913.90 : x
  2. Step 2: Convert to fraction form
    87,639.66/120,949.06 = 49,913.90/x
  3. Step 3: Cross multiply
    87,639.66x = 120,949.06 × 49,913.90
  4. Step 4: Simplify right side
    87,639.66x = 6,037,039,285.93
  5. Step 5: Solve for x
    x = 6,037,039,285.93/87,639.66
  6. Step 6: Final answer
    x = 68,884.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.