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Finding the Fourth Proportional to 55,167, 82,774.80 and 18,231

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Solution

The fourth proportional to 55,167, 82,774.80 and 18,231 is: 27,354.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,167 : 82,774.80 = 18,231 : x
  2. Step 2: Convert to fraction form
    55,167/82,774.80 = 18,231/x
  3. Step 3: Cross multiply
    55,167x = 82,774.80 × 18,231
  4. Step 4: Simplify right side
    55,167x = 1,509,067,378.80
  5. Step 5: Solve for x
    x = 1,509,067,378.80/55,167
  6. Step 6: Final answer
    x = 27,354.53

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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.