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Finding the Fourth Proportional to 71,689.70, 107,556.42 and 36,653.96

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Solution

The fourth proportional to 71,689.70, 107,556.42 and 36,653.96 is: 54,992.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,689.70 : 107,556.42 = 36,653.96 : x
  2. Step 2: Convert to fraction form
    71,689.70/107,556.42 = 36,653.96/x
  3. Step 3: Cross multiply
    71,689.70x = 107,556.42 × 36,653.96
  4. Step 4: Simplify right side
    71,689.70x = 3,942,368,716.42
  5. Step 5: Solve for x
    x = 3,942,368,716.42/71,689.70
  6. Step 6: Final answer
    x = 54,992.12

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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.