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Finding the Fourth Proportional to 80,504.83, 120,806.39 and 50,881.87

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Solution

The fourth proportional to 80,504.83, 120,806.39 and 50,881.87 is: 76,353.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,504.83 : 120,806.39 = 50,881.87 : x
  2. Step 2: Convert to fraction form
    80,504.83/120,806.39 = 50,881.87/x
  3. Step 3: Cross multiply
    80,504.83x = 120,806.39 × 50,881.87
  4. Step 4: Simplify right side
    80,504.83x = 6,146,855,031.15
  5. Step 5: Solve for x
    x = 6,146,855,031.15/80,504.83
  6. Step 6: Final answer
    x = 76,353.87

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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.