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Finding the Fourth Proportional to 72,366.28, 108,716.28 and 69,376.97

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Solution

The fourth proportional to 72,366.28, 108,716.28 and 69,376.97 is: 104,225.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,366.28 : 108,716.28 = 69,376.97 : x
  2. Step 2: Convert to fraction form
    72,366.28/108,716.28 = 69,376.97/x
  3. Step 3: Cross multiply
    72,366.28x = 108,716.28 × 69,376.97
  4. Step 4: Simplify right side
    72,366.28x = 7,542,406,107.70
  5. Step 5: Solve for x
    x = 7,542,406,107.70/72,366.28
  6. Step 6: Final answer
    x = 104,225.43

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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.