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Finding the Fourth Proportional to 45,819.47, 68,690.03 and 20,850.62

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Solution

The fourth proportional to 45,819.47, 68,690.03 and 20,850.62 is: 31,258.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,819.47 : 68,690.03 = 20,850.62 : x
  2. Step 2: Convert to fraction form
    45,819.47/68,690.03 = 20,850.62/x
  3. Step 3: Cross multiply
    45,819.47x = 68,690.03 × 20,850.62
  4. Step 4: Simplify right side
    45,819.47x = 1,432,229,265.62
  5. Step 5: Solve for x
    x = 1,432,229,265.62/45,819.47
  6. Step 6: Final answer
    x = 31,258.09

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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.