Home / 74,151.78-111,238.52-21,554.43

Finding the Fourth Proportional to 74,151.78, 111,238.52 and 21,554.43

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Solution

The fourth proportional to 74,151.78, 111,238.52 and 21,554.43 is: 32,334.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,151.78 : 111,238.52 = 21,554.43 : x
  2. Step 2: Convert to fraction form
    74,151.78/111,238.52 = 21,554.43/x
  3. Step 3: Cross multiply
    74,151.78x = 111,238.52 × 21,554.43
  4. Step 4: Simplify right side
    74,151.78x = 2,397,682,784.87
  5. Step 5: Solve for x
    x = 2,397,682,784.87/74,151.78
  6. Step 6: Final answer
    x = 32,334.80

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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.