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Finding the Fourth Proportional to 80,518.34, 120,713.96 and 50,873.70

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Solution

The fourth proportional to 80,518.34, 120,713.96 and 50,873.70 is: 76,270.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,518.34 : 120,713.96 = 50,873.70 : x
  2. Step 2: Convert to fraction form
    80,518.34/120,713.96 = 50,873.70/x
  3. Step 3: Cross multiply
    80,518.34x = 120,713.96 × 50,873.70
  4. Step 4: Simplify right side
    80,518.34x = 6,141,165,786.85
  5. Step 5: Solve for x
    x = 6,141,165,786.85/80,518.34
  6. Step 6: Final answer
    x = 76,270.40

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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.