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Finding the Fourth Proportional to 60,310.38, 90,448.28 and 20,325

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Solution

The fourth proportional to 60,310.38, 90,448.28 and 20,325 is: 30,481.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,310.38 : 90,448.28 = 20,325 : x
  2. Step 2: Convert to fraction form
    60,310.38/90,448.28 = 20,325/x
  3. Step 3: Cross multiply
    60,310.38x = 90,448.28 × 20,325
  4. Step 4: Simplify right side
    60,310.38x = 1,838,361,291
  5. Step 5: Solve for x
    x = 1,838,361,291/60,310.38
  6. Step 6: Final answer
    x = 30,481.67

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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.