Home / 81,896.06-122,770.96-31,964.49

Finding the Fourth Proportional to 81,896.06, 122,770.96 and 31,964.49

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Solution

The fourth proportional to 81,896.06, 122,770.96 and 31,964.49 is: 47,918.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,896.06 : 122,770.96 = 31,964.49 : x
  2. Step 2: Convert to fraction form
    81,896.06/122,770.96 = 31,964.49/x
  3. Step 3: Cross multiply
    81,896.06x = 122,770.96 × 31,964.49
  4. Step 4: Simplify right side
    81,896.06x = 3,924,311,043.30
  5. Step 5: Solve for x
    x = 3,924,311,043.30/81,896.06
  6. Step 6: Final answer
    x = 47,918.19

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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.