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Finding the Fourth Proportional to 43,912.44, 65,870.48 and 12,747.69

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Solution

The fourth proportional to 43,912.44, 65,870.48 and 12,747.69 is: 19,122.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,912.44 : 65,870.48 = 12,747.69 : x
  2. Step 2: Convert to fraction form
    43,912.44/65,870.48 = 12,747.69/x
  3. Step 3: Cross multiply
    43,912.44x = 65,870.48 × 12,747.69
  4. Step 4: Simplify right side
    43,912.44x = 839,696,610.58
  5. Step 5: Solve for x
    x = 839,696,610.58/43,912.44
  6. Step 6: Final answer
    x = 19,122.07

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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.