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Finding the Fourth Proportional to 71,960.67, 107,928.86 and 19,358.46

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Solution

The fourth proportional to 71,960.67, 107,928.86 and 19,358.46 is: 29,034.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,960.67 : 107,928.86 = 19,358.46 : x
  2. Step 2: Convert to fraction form
    71,960.67/107,928.86 = 19,358.46/x
  3. Step 3: Cross multiply
    71,960.67x = 107,928.86 × 19,358.46
  4. Step 4: Simplify right side
    71,960.67x = 2,089,336,422.36
  5. Step 5: Solve for x
    x = 2,089,336,422.36/71,960.67
  6. Step 6: Final answer
    x = 29,034.42

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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.