Home / 87,487.11-120,736.04-49,249.13

Finding the Fourth Proportional to 87,487.11, 120,736.04 and 49,249.13

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Solution

The fourth proportional to 87,487.11, 120,736.04 and 49,249.13 is: 67,965.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,487.11 : 120,736.04 = 49,249.13 : x
  2. Step 2: Convert to fraction form
    87,487.11/120,736.04 = 49,249.13/x
  3. Step 3: Cross multiply
    87,487.11x = 120,736.04 × 49,249.13
  4. Step 4: Simplify right side
    87,487.11x = 5,946,144,929.65
  5. Step 5: Solve for x
    x = 5,946,144,929.65/87,487.11
  6. Step 6: Final answer
    x = 67,965.95

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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.