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Finding the Fourth Proportional to 36,695, 50,639.10 and 21,791

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Solution

The fourth proportional to 36,695, 50,639.10 and 21,791 is: 30,071.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,695 : 50,639.10 = 21,791 : x
  2. Step 2: Convert to fraction form
    36,695/50,639.10 = 21,791/x
  3. Step 3: Cross multiply
    36,695x = 50,639.10 × 21,791
  4. Step 4: Simplify right side
    36,695x = 1,103,476,628.10
  5. Step 5: Solve for x
    x = 1,103,476,628.10/36,695
  6. Step 6: Final answer
    x = 30,071.58

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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.