Home / 87,039.96-120,115.08-49,314.21

Finding the Fourth Proportional to 87,039.96, 120,115.08 and 49,314.21

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Solution

The fourth proportional to 87,039.96, 120,115.08 and 49,314.21 is: 68,053.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,039.96 : 120,115.08 = 49,314.21 : x
  2. Step 2: Convert to fraction form
    87,039.96/120,115.08 = 49,314.21/x
  3. Step 3: Cross multiply
    87,039.96x = 120,115.08 × 49,314.21
  4. Step 4: Simplify right side
    87,039.96x = 5,923,380,279.29
  5. Step 5: Solve for x
    x = 5,923,380,279.29/87,039.96
  6. Step 6: Final answer
    x = 68,053.57

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1.5x scale

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.