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Finding the Fourth Proportional to 45,082.44, 67,629.81 and 18,781.03

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Solution

The fourth proportional to 45,082.44, 67,629.81 and 18,781.03 is: 28,174.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,082.44 : 67,629.81 = 18,781.03 : x
  2. Step 2: Convert to fraction form
    45,082.44/67,629.81 = 18,781.03/x
  3. Step 3: Cross multiply
    45,082.44x = 67,629.81 × 18,781.03
  4. Step 4: Simplify right side
    45,082.44x = 1,270,157,645.47
  5. Step 5: Solve for x
    x = 1,270,157,645.47/45,082.44
  6. Step 6: Final answer
    x = 28,174.11

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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.