Home / 54,668.20-81,991.10-15,215.40

Finding the Fourth Proportional to 54,668.20, 81,991.10 and 15,215.40

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Solution

The fourth proportional to 54,668.20, 81,991.10 and 15,215.40 is: 22,819.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,668.20 : 81,991.10 = 15,215.40 : x
  2. Step 2: Convert to fraction form
    54,668.20/81,991.10 = 15,215.40/x
  3. Step 3: Cross multiply
    54,668.20x = 81,991.10 × 15,215.40
  4. Step 4: Simplify right side
    54,668.20x = 1,247,527,382.94
  5. Step 5: Solve for x
    x = 1,247,527,382.94/54,668.20
  6. Step 6: Final answer
    x = 22,819.98

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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.