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Finding the Fourth Proportional to 71,195.82, 98,247.78 and 39,364.44

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Solution

The fourth proportional to 71,195.82, 98,247.78 and 39,364.44 is: 54,321.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,195.82 : 98,247.78 = 39,364.44 : x
  2. Step 2: Convert to fraction form
    71,195.82/98,247.78 = 39,364.44/x
  3. Step 3: Cross multiply
    71,195.82x = 98,247.78 × 39,364.44
  4. Step 4: Simplify right side
    71,195.82x = 3,867,468,840.94
  5. Step 5: Solve for x
    x = 3,867,468,840.94/71,195.82
  6. Step 6: Final answer
    x = 54,321.57

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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.