Home / 87,659.76-120,940.92-49,907.28

Finding the Fourth Proportional to 87,659.76, 120,940.92 and 49,907.28

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Solution

The fourth proportional to 87,659.76, 120,940.92 and 49,907.28 is: 68,855.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,659.76 : 120,940.92 = 49,907.28 : x
  2. Step 2: Convert to fraction form
    87,659.76/120,940.92 = 49,907.28/x
  3. Step 3: Cross multiply
    87,659.76x = 120,940.92 × 49,907.28
  4. Step 4: Simplify right side
    87,659.76x = 6,035,832,357.90
  5. Step 5: Solve for x
    x = 6,035,832,357.90/87,659.76
  6. Step 6: Final answer
    x = 68,855.22

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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.