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Finding the Fourth Proportional to 87,041, 120,121.44 and 49,327.40

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Solution

The fourth proportional to 87,041, 120,121.44 and 49,327.40 is: 68,074.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,041 : 120,121.44 = 49,327.40 : x
  2. Step 2: Convert to fraction form
    87,041/120,121.44 = 49,327.40/x
  3. Step 3: Cross multiply
    87,041x = 120,121.44 × 49,327.40
  4. Step 4: Simplify right side
    87,041x = 5,925,278,319.46
  5. Step 5: Solve for x
    x = 5,925,278,319.46/87,041
  6. Step 6: Final answer
    x = 68,074.57

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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.