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Finding the Fourth Proportional to 67,187.05, 100,819.51 and 33,909.71

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Solution

The fourth proportional to 67,187.05, 100,819.51 and 33,909.71 is: 50,884.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,187.05 : 100,819.51 = 33,909.71 : x
  2. Step 2: Convert to fraction form
    67,187.05/100,819.51 = 33,909.71/x
  3. Step 3: Cross multiply
    67,187.05x = 100,819.51 × 33,909.71
  4. Step 4: Simplify right side
    67,187.05x = 3,418,760,640.88
  5. Step 5: Solve for x
    x = 3,418,760,640.88/67,187.05
  6. Step 6: Final answer
    x = 50,884.22

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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.