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Finding the Fourth Proportional to 33,819.40, 50,729.10 and 33,128.20

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Solution

The fourth proportional to 33,819.40, 50,729.10 and 33,128.20 is: 49,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,819.40 : 50,729.10 = 33,128.20 : x
  2. Step 2: Convert to fraction form
    33,819.40/50,729.10 = 33,128.20/x
  3. Step 3: Cross multiply
    33,819.40x = 50,729.10 × 33,128.20
  4. Step 4: Simplify right side
    33,819.40x = 1,680,563,770.62
  5. Step 5: Solve for x
    x = 1,680,563,770.62/33,819.40
  6. Step 6: Final answer
    x = 49,692.30

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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.