Home / 51,382.20-77,112.25-21,820.79

Finding the Fourth Proportional to 51,382.20, 77,112.25 and 21,820.79

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Solution

The fourth proportional to 51,382.20, 77,112.25 and 21,820.79 is: 32,747.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,382.20 : 77,112.25 = 21,820.79 : x
  2. Step 2: Convert to fraction form
    51,382.20/77,112.25 = 21,820.79/x
  3. Step 3: Cross multiply
    51,382.20x = 77,112.25 × 21,820.79
  4. Step 4: Simplify right side
    51,382.20x = 1,682,650,474.65
  5. Step 5: Solve for x
    x = 1,682,650,474.65/51,382.20
  6. Step 6: Final answer
    x = 32,747.73

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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.