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Finding the Fourth Proportional to 62,271, 85,934 and 39,915

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Solution

The fourth proportional to 62,271, 85,934 and 39,915 is: 55,082.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,271 : 85,934 = 39,915 : x
  2. Step 2: Convert to fraction form
    62,271/85,934 = 39,915/x
  3. Step 3: Cross multiply
    62,271x = 85,934 × 39,915
  4. Step 4: Simplify right side
    62,271x = 3,430,055,610
  5. Step 5: Solve for x
    x = 3,430,055,610/62,271
  6. Step 6: Final answer
    x = 55,082.71

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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.