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Finding the Fourth Proportional to 67,085.70, 100,628.55 and 50,355.15

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Solution

The fourth proportional to 67,085.70, 100,628.55 and 50,355.15 is: 75,532.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,085.70 : 100,628.55 = 50,355.15 : x
  2. Step 2: Convert to fraction form
    67,085.70/100,628.55 = 50,355.15/x
  3. Step 3: Cross multiply
    67,085.70x = 100,628.55 × 50,355.15
  4. Step 4: Simplify right side
    67,085.70x = 5,067,165,729.53
  5. Step 5: Solve for x
    x = 5,067,165,729.53/67,085.70
  6. Step 6: Final answer
    x = 75,532.73

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1.5x scale

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.