Home / 81,243.05-121,819.55-33,245.37

Finding the Fourth Proportional to 81,243.05, 121,819.55 and 33,245.37

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Solution

The fourth proportional to 81,243.05, 121,819.55 and 33,245.37 is: 49,849.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,243.05 : 121,819.55 = 33,245.37 : x
  2. Step 2: Convert to fraction form
    81,243.05/121,819.55 = 33,245.37/x
  3. Step 3: Cross multiply
    81,243.05x = 121,819.55 × 33,245.37
  4. Step 4: Simplify right side
    81,243.05x = 4,049,935,846.76
  5. Step 5: Solve for x
    x = 4,049,935,846.76/81,243.05
  6. Step 6: Final answer
    x = 49,849.63

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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.