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Finding the Fourth Proportional to 71,071.92, 98,082.09 and 39,239.82

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Solution

The fourth proportional to 71,071.92, 98,082.09 and 39,239.82 is: 54,152.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,071.92 : 98,082.09 = 39,239.82 : x
  2. Step 2: Convert to fraction form
    71,071.92/98,082.09 = 39,239.82/x
  3. Step 3: Cross multiply
    71,071.92x = 98,082.09 × 39,239.82
  4. Step 4: Simplify right side
    71,071.92x = 3,848,723,556.82
  5. Step 5: Solve for x
    x = 3,848,723,556.82/71,071.92
  6. Step 6: Final answer
    x = 54,152.52

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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.