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Finding the Fourth Proportional to 80,797.65, 121,119.79 and 28,193.01

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Solution

The fourth proportional to 80,797.65, 121,119.79 and 28,193.01 is: 42,262.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,797.65 : 121,119.79 = 28,193.01 : x
  2. Step 2: Convert to fraction form
    80,797.65/121,119.79 = 28,193.01/x
  3. Step 3: Cross multiply
    80,797.65x = 121,119.79 × 28,193.01
  4. Step 4: Simplify right side
    80,797.65x = 3,414,731,450.67
  5. Step 5: Solve for x
    x = 3,414,731,450.67/80,797.65
  6. Step 6: Final answer
    x = 42,262.76

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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.