Home / 87,659.10-120,969.27-49,939.74

Finding the Fourth Proportional to 87,659.10, 120,969.27 and 49,939.74

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Solution

The fourth proportional to 87,659.10, 120,969.27 and 49,939.74 is: 68,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,659.10 : 120,969.27 = 49,939.74 : x
  2. Step 2: Convert to fraction form
    87,659.10/120,969.27 = 49,939.74/x
  3. Step 3: Cross multiply
    87,659.10x = 120,969.27 × 49,939.74
  4. Step 4: Simplify right side
    87,659.10x = 6,041,173,891.79
  5. Step 5: Solve for x
    x = 6,041,173,891.79/87,659.10
  6. Step 6: Final answer
    x = 68,916.68

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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.