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Finding the Fourth Proportional to 81,818.60, 122,763.44 and 44,405.10

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Solution

The fourth proportional to 81,818.60, 122,763.44 and 44,405.10 is: 66,626.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,818.60 : 122,763.44 = 44,405.10 : x
  2. Step 2: Convert to fraction form
    81,818.60/122,763.44 = 44,405.10/x
  3. Step 3: Cross multiply
    81,818.60x = 122,763.44 × 44,405.10
  4. Step 4: Simplify right side
    81,818.60x = 5,451,322,914.43
  5. Step 5: Solve for x
    x = 5,451,322,914.43/81,818.60
  6. Step 6: Final answer
    x = 66,626.94

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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.