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Finding the Fourth Proportional to 54,229.80, 81,347.22 and 19,173

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Solution

The fourth proportional to 54,229.80, 81,347.22 and 19,173 is: 28,760.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,229.80 : 81,347.22 = 19,173 : x
  2. Step 2: Convert to fraction form
    54,229.80/81,347.22 = 19,173/x
  3. Step 3: Cross multiply
    54,229.80x = 81,347.22 × 19,173
  4. Step 4: Simplify right side
    54,229.80x = 1,559,670,249.06
  5. Step 5: Solve for x
    x = 1,559,670,249.06/54,229.80
  6. Step 6: Final answer
    x = 28,760.39

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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.