Home / 81,581.14-122,357.10-51,910.84

Finding the Fourth Proportional to 81,581.14, 122,357.10 and 51,910.84

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Solution

The fourth proportional to 81,581.14, 122,357.10 and 51,910.84 is: 77,856.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,581.14 : 122,357.10 = 51,910.84 : x
  2. Step 2: Convert to fraction form
    81,581.14/122,357.10 = 51,910.84/x
  3. Step 3: Cross multiply
    81,581.14x = 122,357.10 × 51,910.84
  4. Step 4: Simplify right side
    81,581.14x = 6,351,659,840.96
  5. Step 5: Solve for x
    x = 6,351,659,840.96/81,581.14
  6. Step 6: Final answer
    x = 77,856.96

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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.