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Finding the Fourth Proportional to 80,351.87, 110,897.84 and 51,292.78

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Solution

The fourth proportional to 80,351.87, 110,897.84 and 51,292.78 is: 70,791.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,351.87 : 110,897.84 = 51,292.78 : x
  2. Step 2: Convert to fraction form
    80,351.87/110,897.84 = 51,292.78/x
  3. Step 3: Cross multiply
    80,351.87x = 110,897.84 × 51,292.78
  4. Step 4: Simplify right side
    80,351.87x = 5,688,258,360.58
  5. Step 5: Solve for x
    x = 5,688,258,360.58/80,351.87
  6. Step 6: Final answer
    x = 70,791.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.