Home / 67,380.20-101,135.10-34,137.80

Finding the Fourth Proportional to 67,380.20, 101,135.10 and 34,137.80

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Solution

The fourth proportional to 67,380.20, 101,135.10 and 34,137.80 is: 51,239.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,380.20 : 101,135.10 = 34,137.80 : x
  2. Step 2: Convert to fraction form
    67,380.20/101,135.10 = 34,137.80/x
  3. Step 3: Cross multiply
    67,380.20x = 101,135.10 × 34,137.80
  4. Step 4: Simplify right side
    67,380.20x = 3,452,529,816.78
  5. Step 5: Solve for x
    x = 3,452,529,816.78/67,380.20
  6. Step 6: Final answer
    x = 51,239.53

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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.