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Finding the Fourth Proportional to 71,960.30, 107,928.30 and 19,358.08

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Solution

The fourth proportional to 71,960.30, 107,928.30 and 19,358.08 is: 29,033.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,960.30 : 107,928.30 = 19,358.08 : x
  2. Step 2: Convert to fraction form
    71,960.30/107,928.30 = 19,358.08/x
  3. Step 3: Cross multiply
    71,960.30x = 107,928.30 × 19,358.08
  4. Step 4: Simplify right side
    71,960.30x = 2,089,284,665.66
  5. Step 5: Solve for x
    x = 2,089,284,665.66/71,960.30
  6. Step 6: Final answer
    x = 29,033.85

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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.