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Finding the Fourth Proportional to 80,624, 120,936.76 and 30,704.56

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Solution

The fourth proportional to 80,624, 120,936.76 and 30,704.56 is: 46,057.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,624 : 120,936.76 = 30,704.56 : x
  2. Step 2: Convert to fraction form
    80,624/120,936.76 = 30,704.56/x
  3. Step 3: Cross multiply
    80,624x = 120,936.76 × 30,704.56
  4. Step 4: Simplify right side
    80,624x = 3,713,310,003.63
  5. Step 5: Solve for x
    x = 3,713,310,003.63/80,624
  6. Step 6: Final answer
    x = 46,057.13

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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.