Home / 39,278,446.49-54,205,937.79-21,874,791.72

Finding the Fourth Proportional to 39,278,446.49, 54,205,937.79 and 21,874,791.72

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Solution

The fourth proportional to 39,278,446.49, 54,205,937.79 and 21,874,791.72 is: 30,188,149.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,278,446.49 : 54,205,937.79 = 21,874,791.72 : x
  2. Step 2: Convert to fraction form
    39,278,446.49/54,205,937.79 = 21,874,791.72/x
  3. Step 3: Cross multiply
    39,278,446.49x = 54,205,937.79 × 21,874,791.72
  4. Step 4: Simplify right side
    39,278,446.49x = 1,185,743,599,387,814.50
  5. Step 5: Solve for x
    x = 1,185,743,599,387,814.50/39,278,446.49
  6. Step 6: Final answer
    x = 30,188,149.11

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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.