Home / 87,013.90-120,079.26-49,288.15

Finding the Fourth Proportional to 87,013.90, 120,079.26 and 49,288.15

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Solution

The fourth proportional to 87,013.90, 120,079.26 and 49,288.15 is: 68,017.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,013.90 : 120,079.26 = 49,288.15 : x
  2. Step 2: Convert to fraction form
    87,013.90/120,079.26 = 49,288.15/x
  3. Step 3: Cross multiply
    87,013.90x = 120,079.26 × 49,288.15
  4. Step 4: Simplify right side
    87,013.90x = 5,918,484,578.77
  5. Step 5: Solve for x
    x = 5,918,484,578.77/87,013.90
  6. Step 6: Final answer
    x = 68,017.69

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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.