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Finding the Fourth Proportional to 34,250.65, 47,267.69 and 20,819.70

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Solution

The fourth proportional to 34,250.65, 47,267.69 and 20,819.70 is: 28,732.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,250.65 : 47,267.69 = 20,819.70 : x
  2. Step 2: Convert to fraction form
    34,250.65/47,267.69 = 20,819.70/x
  3. Step 3: Cross multiply
    34,250.65x = 47,267.69 × 20,819.70
  4. Step 4: Simplify right side
    34,250.65x = 984,099,021.39
  5. Step 5: Solve for x
    x = 984,099,021.39/34,250.65
  6. Step 6: Final answer
    x = 28,732.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.