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Finding the Fourth Proportional to 35,786.72, 49,377.72 and 21,639.26

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Solution

The fourth proportional to 35,786.72, 49,377.72 and 21,639.26 is: 29,857.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,786.72 : 49,377.72 = 21,639.26 : x
  2. Step 2: Convert to fraction form
    35,786.72/49,377.72 = 21,639.26/x
  3. Step 3: Cross multiply
    35,786.72x = 49,377.72 × 21,639.26
  4. Step 4: Simplify right side
    35,786.72x = 1,068,497,321.29
  5. Step 5: Solve for x
    x = 1,068,497,321.29/35,786.72
  6. Step 6: Final answer
    x = 29,857.37

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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.