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Finding the Fourth Proportional to 55,512, 83,268.78 and 18,072.27

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Solution

The fourth proportional to 55,512, 83,268.78 and 18,072.27 is: 27,108.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,512 : 83,268.78 = 18,072.27 : x
  2. Step 2: Convert to fraction form
    55,512/83,268.78 = 18,072.27/x
  3. Step 3: Cross multiply
    55,512x = 83,268.78 × 18,072.27
  4. Step 4: Simplify right side
    55,512x = 1,504,855,874.73
  5. Step 5: Solve for x
    x = 1,504,855,874.73/55,512
  6. Step 6: Final answer
    x = 27,108.66

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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.