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Finding the Fourth Proportional to 36,974.40, 55,418.40 and 19,435.20

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Solution

The fourth proportional to 36,974.40, 55,418.40 and 19,435.20 is: 29,130.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,974.40 : 55,418.40 = 19,435.20 : x
  2. Step 2: Convert to fraction form
    36,974.40/55,418.40 = 19,435.20/x
  3. Step 3: Cross multiply
    36,974.40x = 55,418.40 × 19,435.20
  4. Step 4: Simplify right side
    36,974.40x = 1,077,067,687.68
  5. Step 5: Solve for x
    x = 1,077,067,687.68/36,974.40
  6. Step 6: Final answer
    x = 29,130.09

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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.