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Finding the Fourth Proportional to 71,943.28, 107,901.84 and 19,340.48

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Solution

The fourth proportional to 71,943.28, 107,901.84 and 19,340.48 is: 29,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,943.28 : 107,901.84 = 19,340.48 : x
  2. Step 2: Convert to fraction form
    71,943.28/107,901.84 = 19,340.48/x
  3. Step 3: Cross multiply
    71,943.28x = 107,901.84 × 19,340.48
  4. Step 4: Simplify right side
    71,943.28x = 2,086,873,378.48
  5. Step 5: Solve for x
    x = 2,086,873,378.48/71,943.28
  6. Step 6: Final answer
    x = 29,007.20

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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.