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Finding the Fourth Proportional to 61,610.42, 85,023 and 36,131.87

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Solution

The fourth proportional to 61,610.42, 85,023 and 36,131.87 is: 49,862.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,610.42 : 85,023 = 36,131.87 : x
  2. Step 2: Convert to fraction form
    61,610.42/85,023 = 36,131.87/x
  3. Step 3: Cross multiply
    61,610.42x = 85,023 × 36,131.87
  4. Step 4: Simplify right side
    61,610.42x = 3,072,040,195.57
  5. Step 5: Solve for x
    x = 3,072,040,195.57/61,610.42
  6. Step 6: Final answer
    x = 49,862.35

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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.