Home / 54,721.20-82,081.80-13,168.20

Finding the Fourth Proportional to 54,721.20, 82,081.80 and 13,168.20

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Solution

The fourth proportional to 54,721.20, 82,081.80 and 13,168.20 is: 19,752.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,721.20 : 82,081.80 = 13,168.20 : x
  2. Step 2: Convert to fraction form
    54,721.20/82,081.80 = 13,168.20/x
  3. Step 3: Cross multiply
    54,721.20x = 82,081.80 × 13,168.20
  4. Step 4: Simplify right side
    54,721.20x = 1,080,869,558.76
  5. Step 5: Solve for x
    x = 1,080,869,558.76/54,721.20
  6. Step 6: Final answer
    x = 19,752.30

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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.