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Finding the Fourth Proportional to 54,376.80, 81,559.92 and 14,939.76

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Solution

The fourth proportional to 54,376.80, 81,559.92 and 14,939.76 is: 22,408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,376.80 : 81,559.92 = 14,939.76 : x
  2. Step 2: Convert to fraction form
    54,376.80/81,559.92 = 14,939.76/x
  3. Step 3: Cross multiply
    54,376.80x = 81,559.92 × 14,939.76
  4. Step 4: Simplify right side
    54,376.80x = 1,218,485,630.42
  5. Step 5: Solve for x
    x = 1,218,485,630.42/54,376.80
  6. Step 6: Final answer
    x = 22,408.19

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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.