Home / 75,129.75-103,679.01-41,138.21

Finding the Fourth Proportional to 75,129.75, 103,679.01 and 41,138.21

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Solution

The fourth proportional to 75,129.75, 103,679.01 and 41,138.21 is: 56,770.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,129.75 : 103,679.01 = 41,138.21 : x
  2. Step 2: Convert to fraction form
    75,129.75/103,679.01 = 41,138.21/x
  3. Step 3: Cross multiply
    75,129.75x = 103,679.01 × 41,138.21
  4. Step 4: Simplify right side
    75,129.75x = 4,265,168,885.97
  5. Step 5: Solve for x
    x = 4,265,168,885.97/75,129.75
  6. Step 6: Final answer
    x = 56,770.71

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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.