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Finding the Fourth Proportional to 45,469.62, 68,201.73 and 20,499.57

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Solution

The fourth proportional to 45,469.62, 68,201.73 and 20,499.57 is: 30,748.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,469.62 : 68,201.73 = 20,499.57 : x
  2. Step 2: Convert to fraction form
    45,469.62/68,201.73 = 20,499.57/x
  3. Step 3: Cross multiply
    45,469.62x = 68,201.73 × 20,499.57
  4. Step 4: Simplify right side
    45,469.62x = 1,398,106,138.26
  5. Step 5: Solve for x
    x = 1,398,106,138.26/45,469.62
  6. Step 6: Final answer
    x = 30,748.14

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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.