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Finding the Fourth Proportional to 45,912.80, 68,811.80 and 19,586.80

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Solution

The fourth proportional to 45,912.80, 68,811.80 and 19,586.80 is: 29,355.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,912.80 : 68,811.80 = 19,586.80 : x
  2. Step 2: Convert to fraction form
    45,912.80/68,811.80 = 19,586.80/x
  3. Step 3: Cross multiply
    45,912.80x = 68,811.80 × 19,586.80
  4. Step 4: Simplify right side
    45,912.80x = 1,347,802,964.24
  5. Step 5: Solve for x
    x = 1,347,802,964.24/45,912.80
  6. Step 6: Final answer
    x = 29,355.71

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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.