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Finding the Fourth Proportional to 35,791.91, 49,370.11 and 21,988.19

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Solution

The fourth proportional to 35,791.91, 49,370.11 and 21,988.19 is: 30,329.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,791.91 : 49,370.11 = 21,988.19 : x
  2. Step 2: Convert to fraction form
    35,791.91/49,370.11 = 21,988.19/x
  3. Step 3: Cross multiply
    35,791.91x = 49,370.11 × 21,988.19
  4. Step 4: Simplify right side
    35,791.91x = 1,085,559,112.15
  5. Step 5: Solve for x
    x = 1,085,559,112.15/35,791.91
  6. Step 6: Final answer
    x = 30,329.74

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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.