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Finding the Fourth Proportional to 54,653.01, 81,979.52 and 15,213.20

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Solution

The fourth proportional to 54,653.01, 81,979.52 and 15,213.20 is: 22,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,653.01 : 81,979.52 = 15,213.20 : x
  2. Step 2: Convert to fraction form
    54,653.01/81,979.52 = 15,213.20/x
  3. Step 3: Cross multiply
    54,653.01x = 81,979.52 × 15,213.20
  4. Step 4: Simplify right side
    54,653.01x = 1,247,170,833.66
  5. Step 5: Solve for x
    x = 1,247,170,833.66/54,653.01
  6. Step 6: Final answer
    x = 22,819.80

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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.