Home / 54,780.20-82,202.70-19,715.30

Finding the Fourth Proportional to 54,780.20, 82,202.70 and 19,715.30

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Solution

The fourth proportional to 54,780.20, 82,202.70 and 19,715.30 is: 29,584.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,780.20 : 82,202.70 = 19,715.30 : x
  2. Step 2: Convert to fraction form
    54,780.20/82,202.70 = 19,715.30/x
  3. Step 3: Cross multiply
    54,780.20x = 82,202.70 × 19,715.30
  4. Step 4: Simplify right side
    54,780.20x = 1,620,650,891.31
  5. Step 5: Solve for x
    x = 1,620,650,891.31/54,780.20
  6. Step 6: Final answer
    x = 29,584.61

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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.