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Finding the Fourth Proportional to 51,231.56, 76,881.87 and 17,951.92

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Solution

The fourth proportional to 51,231.56, 76,881.87 and 17,951.92 is: 26,939.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,231.56 : 76,881.87 = 17,951.92 : x
  2. Step 2: Convert to fraction form
    51,231.56/76,881.87 = 17,951.92/x
  3. Step 3: Cross multiply
    51,231.56x = 76,881.87 × 17,951.92
  4. Step 4: Simplify right side
    51,231.56x = 1,380,176,987.49
  5. Step 5: Solve for x
    x = 1,380,176,987.49/51,231.56
  6. Step 6: Final answer
    x = 26,939.98

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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.