Home / 75,123.91-103,667.80-41,131.78

Finding the Fourth Proportional to 75,123.91, 103,667.80 and 41,131.78

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Solution

The fourth proportional to 75,123.91, 103,667.80 and 41,131.78 is: 56,760.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,123.91 : 103,667.80 = 41,131.78 : x
  2. Step 2: Convert to fraction form
    75,123.91/103,667.80 = 41,131.78/x
  3. Step 3: Cross multiply
    75,123.91x = 103,667.80 × 41,131.78
  4. Step 4: Simplify right side
    75,123.91x = 4,264,040,937.03
  5. Step 5: Solve for x
    x = 4,264,040,937.03/75,123.91
  6. Step 6: Final answer
    x = 56,760.10

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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.