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Finding the Fourth Proportional to 54,425.60, 81,633.60 and 14,979.20

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Solution

The fourth proportional to 54,425.60, 81,633.60 and 14,979.20 is: 22,467.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,425.60 : 81,633.60 = 14,979.20 : x
  2. Step 2: Convert to fraction form
    54,425.60/81,633.60 = 14,979.20/x
  3. Step 3: Cross multiply
    54,425.60x = 81,633.60 × 14,979.20
  4. Step 4: Simplify right side
    54,425.60x = 1,222,806,021.12
  5. Step 5: Solve for x
    x = 1,222,806,021.12/54,425.60
  6. Step 6: Final answer
    x = 22,467.48

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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.