Home / 75,121.11-103,667.15-41,131.75

Finding the Fourth Proportional to 75,121.11, 103,667.15 and 41,131.75

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Solution

The fourth proportional to 75,121.11, 103,667.15 and 41,131.75 is: 56,761.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,121.11 : 103,667.15 = 41,131.75 : x
  2. Step 2: Convert to fraction form
    75,121.11/103,667.15 = 41,131.75/x
  3. Step 3: Cross multiply
    75,121.11x = 103,667.15 × 41,131.75
  4. Step 4: Simplify right side
    75,121.11x = 4,264,011,297.01
  5. Step 5: Solve for x
    x = 4,264,011,297.01/75,121.11
  6. Step 6: Final answer
    x = 56,761.82

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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.