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Finding the Fourth Proportional to 81,874.63, 122,811.94 and 32,661.19

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Solution

The fourth proportional to 81,874.63, 122,811.94 and 32,661.19 is: 48,991.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,874.63 : 122,811.94 = 32,661.19 : x
  2. Step 2: Convert to fraction form
    81,874.63/122,811.94 = 32,661.19/x
  3. Step 3: Cross multiply
    81,874.63x = 122,811.94 × 32,661.19
  4. Step 4: Simplify right side
    81,874.63x = 4,011,183,492.55
  5. Step 5: Solve for x
    x = 4,011,183,492.55/81,874.63
  6. Step 6: Final answer
    x = 48,991.78

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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.