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Finding the Fourth Proportional to 41,175.69, 61,715.87 and 18,942.40

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Solution

The fourth proportional to 41,175.69, 61,715.87 and 18,942.40 is: 28,391.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,175.69 : 61,715.87 = 18,942.40 : x
  2. Step 2: Convert to fraction form
    41,175.69/61,715.87 = 18,942.40/x
  3. Step 3: Cross multiply
    41,175.69x = 61,715.87 × 18,942.40
  4. Step 4: Simplify right side
    41,175.69x = 1,169,046,749.35
  5. Step 5: Solve for x
    x = 1,169,046,749.35/41,175.69
  6. Step 6: Final answer
    x = 28,391.68

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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.