Home / 75,003.28-112,375.64-49,687

Finding the Fourth Proportional to 75,003.28, 112,375.64 and 49,687

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Solution

The fourth proportional to 75,003.28, 112,375.64 and 49,687 is: 74,444.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,003.28 : 112,375.64 = 49,687 : x
  2. Step 2: Convert to fraction form
    75,003.28/112,375.64 = 49,687/x
  3. Step 3: Cross multiply
    75,003.28x = 112,375.64 × 49,687
  4. Step 4: Simplify right side
    75,003.28x = 5,583,608,424.68
  5. Step 5: Solve for x
    x = 5,583,608,424.68/75,003.28
  6. Step 6: Final answer
    x = 74,444.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.