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Finding the Fourth Proportional to 71,172.92, 98,214.36 and 39,339.92

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Solution

The fourth proportional to 71,172.92, 98,214.36 and 39,339.92 is: 54,286.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,172.92 : 98,214.36 = 39,339.92 : x
  2. Step 2: Convert to fraction form
    71,172.92/98,214.36 = 39,339.92/x
  3. Step 3: Cross multiply
    71,172.92x = 98,214.36 × 39,339.92
  4. Step 4: Simplify right side
    71,172.92x = 3,863,745,065.25
  5. Step 5: Solve for x
    x = 3,863,745,065.25/71,172.92
  6. Step 6: Final answer
    x = 54,286.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.