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Finding the Fourth Proportional to 71,629.73, 107,444.49 and 19,039.22

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Solution

The fourth proportional to 71,629.73, 107,444.49 and 19,039.22 is: 28,558.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,629.73 : 107,444.49 = 19,039.22 : x
  2. Step 2: Convert to fraction form
    71,629.73/107,444.49 = 19,039.22/x
  3. Step 3: Cross multiply
    71,629.73x = 107,444.49 × 19,039.22
  4. Step 4: Simplify right side
    71,629.73x = 2,045,659,282.90
  5. Step 5: Solve for x
    x = 2,045,659,282.90/71,629.73
  6. Step 6: Final answer
    x = 28,558.80

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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.