Home / 75,138.10-103,687.36-41,145.97

Finding the Fourth Proportional to 75,138.10, 103,687.36 and 41,145.97

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Solution

The fourth proportional to 75,138.10, 103,687.36 and 41,145.97 is: 56,779.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,138.10 : 103,687.36 = 41,145.97 : x
  2. Step 2: Convert to fraction form
    75,138.10/103,687.36 = 41,145.97/x
  3. Step 3: Cross multiply
    75,138.10x = 103,687.36 × 41,145.97
  4. Step 4: Simplify right side
    75,138.10x = 4,266,317,003.94
  5. Step 5: Solve for x
    x = 4,266,317,003.94/75,138.10
  6. Step 6: Final answer
    x = 56,779.68

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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.