Home / 87,689.19-120,982.04-49,443.93

Finding the Fourth Proportional to 87,689.19, 120,982.04 and 49,443.93

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Solution

The fourth proportional to 87,689.19, 120,982.04 and 49,443.93 is: 68,216.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,689.19 : 120,982.04 = 49,443.93 : x
  2. Step 2: Convert to fraction form
    87,689.19/120,982.04 = 49,443.93/x
  3. Step 3: Cross multiply
    87,689.19x = 120,982.04 × 49,443.93
  4. Step 4: Simplify right side
    87,689.19x = 5,981,827,269.80
  5. Step 5: Solve for x
    x = 5,981,827,269.80/87,689.19
  6. Step 6: Final answer
    x = 68,216.25

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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.