Home / 67,019.28-100,375.76-31,983.54

Finding the Fourth Proportional to 67,019.28, 100,375.76 and 31,983.54

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Solution

The fourth proportional to 67,019.28, 100,375.76 and 31,983.54 is: 47,902.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,019.28 : 100,375.76 = 31,983.54 : x
  2. Step 2: Convert to fraction form
    67,019.28/100,375.76 = 31,983.54/x
  3. Step 3: Cross multiply
    67,019.28x = 100,375.76 × 31,983.54
  4. Step 4: Simplify right side
    67,019.28x = 3,210,371,473.19
  5. Step 5: Solve for x
    x = 3,210,371,473.19/67,019.28
  6. Step 6: Final answer
    x = 47,902.21

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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.