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Finding the Fourth Proportional to 40,974.40, 61,380.60 and 36,103.60

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Solution

The fourth proportional to 40,974.40, 61,380.60 and 36,103.60 is: 54,084.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,974.40 : 61,380.60 = 36,103.60 : x
  2. Step 2: Convert to fraction form
    40,974.40/61,380.60 = 36,103.60/x
  3. Step 3: Cross multiply
    40,974.40x = 61,380.60 × 36,103.60
  4. Step 4: Simplify right side
    40,974.40x = 2,216,060,630.16
  5. Step 5: Solve for x
    x = 2,216,060,630.16/40,974.40
  6. Step 6: Final answer
    x = 54,084.03

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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.