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Finding the Fourth Proportional to 81,889.35, 122,832.65 and 36,885.68

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Solution

The fourth proportional to 81,889.35, 122,832.65 and 36,885.68 is: 55,327.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,889.35 : 122,832.65 = 36,885.68 : x
  2. Step 2: Convert to fraction form
    81,889.35/122,832.65 = 36,885.68/x
  3. Step 3: Cross multiply
    81,889.35x = 122,832.65 × 36,885.68
  4. Step 4: Simplify right side
    81,889.35x = 4,530,765,022.86
  5. Step 5: Solve for x
    x = 4,530,765,022.86/81,889.35
  6. Step 6: Final answer
    x = 55,327.89

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1.5x scale

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.