Home / 49,019.20-73,471.20-20,939.20

Finding the Fourth Proportional to 49,019.20, 73,471.20 and 20,939.20

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Solution

The fourth proportional to 49,019.20, 73,471.20 and 20,939.20 is: 31,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,019.20 : 73,471.20 = 20,939.20 : x
  2. Step 2: Convert to fraction form
    49,019.20/73,471.20 = 20,939.20/x
  3. Step 3: Cross multiply
    49,019.20x = 73,471.20 × 20,939.20
  4. Step 4: Simplify right side
    49,019.20x = 1,538,428,151.04
  5. Step 5: Solve for x
    x = 1,538,428,151.04/49,019.20
  6. Step 6: Final answer
    x = 31,384.20

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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.