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Finding the Fourth Proportional to 69,123.76, 103,687.53 and 19,204

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Solution

The fourth proportional to 69,123.76, 103,687.53 and 19,204 is: 28,806.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,123.76 : 103,687.53 = 19,204 : x
  2. Step 2: Convert to fraction form
    69,123.76/103,687.53 = 19,204/x
  3. Step 3: Cross multiply
    69,123.76x = 103,687.53 × 19,204
  4. Step 4: Simplify right side
    69,123.76x = 1,991,215,326.12
  5. Step 5: Solve for x
    x = 1,991,215,326.12/69,123.76
  6. Step 6: Final answer
    x = 28,806.53

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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.