Home / 54,586.20-81,879.30-15,143.70

Finding the Fourth Proportional to 54,586.20, 81,879.30 and 15,143.70

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Solution

The fourth proportional to 54,586.20, 81,879.30 and 15,143.70 is: 22,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,586.20 : 81,879.30 = 15,143.70 : x
  2. Step 2: Convert to fraction form
    54,586.20/81,879.30 = 15,143.70/x
  3. Step 3: Cross multiply
    54,586.20x = 81,879.30 × 15,143.70
  4. Step 4: Simplify right side
    54,586.20x = 1,239,955,555.41
  5. Step 5: Solve for x
    x = 1,239,955,555.41/54,586.20
  6. Step 6: Final answer
    x = 22,715.55

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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.