Home / 81,912.48-122,868.80-22,748.28

Finding the Fourth Proportional to 81,912.48, 122,868.80 and 22,748.28

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Solution

The fourth proportional to 81,912.48, 122,868.80 and 22,748.28 is: 34,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,912.48 : 122,868.80 = 22,748.28 : x
  2. Step 2: Convert to fraction form
    81,912.48/122,868.80 = 22,748.28/x
  3. Step 3: Cross multiply
    81,912.48x = 122,868.80 × 22,748.28
  4. Step 4: Simplify right side
    81,912.48x = 2,795,053,865.66
  5. Step 5: Solve for x
    x = 2,795,053,865.66/81,912.48
  6. Step 6: Final answer
    x = 34,122.44

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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.