Home / 72,121.43-108,177.28-30,568.43

Finding the Fourth Proportional to 72,121.43, 108,177.28 and 30,568.43

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Solution

The fourth proportional to 72,121.43, 108,177.28 and 30,568.43 is: 45,850.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,121.43 : 108,177.28 = 30,568.43 : x
  2. Step 2: Convert to fraction form
    72,121.43/108,177.28 = 30,568.43/x
  3. Step 3: Cross multiply
    72,121.43x = 108,177.28 × 30,568.43
  4. Step 4: Simplify right side
    72,121.43x = 3,306,809,611.27
  5. Step 5: Solve for x
    x = 3,306,809,611.27/72,121.43
  6. Step 6: Final answer
    x = 45,850.58

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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.