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Finding the Fourth Proportional to 61,675.80, 85,103.48 and 36,172.54

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Solution

The fourth proportional to 61,675.80, 85,103.48 and 36,172.54 is: 49,912.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,675.80 : 85,103.48 = 36,172.54 : x
  2. Step 2: Convert to fraction form
    61,675.80/85,103.48 = 36,172.54/x
  3. Step 3: Cross multiply
    61,675.80x = 85,103.48 × 36,172.54
  4. Step 4: Simplify right side
    61,675.80x = 3,078,409,034.44
  5. Step 5: Solve for x
    x = 3,078,409,034.44/61,675.80
  6. Step 6: Final answer
    x = 49,912.75

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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.