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Finding the Fourth Proportional to 85,082.72, 117,414.90 and 47,356.97

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Solution

The fourth proportional to 85,082.72, 117,414.90 and 47,356.97 is: 65,353.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,082.72 : 117,414.90 = 47,356.97 : x
  2. Step 2: Convert to fraction form
    85,082.72/117,414.90 = 47,356.97/x
  3. Step 3: Cross multiply
    85,082.72x = 117,414.90 × 47,356.97
  4. Step 4: Simplify right side
    85,082.72x = 5,560,413,309.78
  5. Step 5: Solve for x
    x = 5,560,413,309.78/85,082.72
  6. Step 6: Final answer
    x = 65,353.03

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1.5x scale

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.