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Finding the Fourth Proportional to 27,781.07, 41,671.71 and 6,721.07

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Solution

The fourth proportional to 27,781.07, 41,671.71 and 6,721.07 is: 10,081.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.07 : 41,671.71 = 6,721.07 : x
  2. Step 2: Convert to fraction form
    27,781.07/41,671.71 = 6,721.07/x
  3. Step 3: Cross multiply
    27,781.07x = 41,671.71 × 6,721.07
  4. Step 4: Simplify right side
    27,781.07x = 280,078,271.57
  5. Step 5: Solve for x
    x = 280,078,271.57/27,781.07
  6. Step 6: Final answer
    x = 10,081.62

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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.