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Finding the Fourth Proportional to 67,228.80, 100,940.40 and 50,704.80

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Solution

The fourth proportional to 67,228.80, 100,940.40 and 50,704.80 is: 76,130.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,228.80 : 100,940.40 = 50,704.80 : x
  2. Step 2: Convert to fraction form
    67,228.80/100,940.40 = 50,704.80/x
  3. Step 3: Cross multiply
    67,228.80x = 100,940.40 × 50,704.80
  4. Step 4: Simplify right side
    67,228.80x = 5,118,162,793.92
  5. Step 5: Solve for x
    x = 5,118,162,793.92/67,228.80
  6. Step 6: Final answer
    x = 76,130.51

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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.