Home / 74,105.28-111,174.93-21,512.79

Finding the Fourth Proportional to 74,105.28, 111,174.93 and 21,512.79

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Solution

The fourth proportional to 74,105.28, 111,174.93 and 21,512.79 is: 32,274.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,105.28 : 111,174.93 = 21,512.79 : x
  2. Step 2: Convert to fraction form
    74,105.28/111,174.93 = 21,512.79/x
  3. Step 3: Cross multiply
    74,105.28x = 111,174.93 × 21,512.79
  4. Step 4: Simplify right side
    74,105.28x = 2,391,682,922.35
  5. Step 5: Solve for x
    x = 2,391,682,922.35/74,105.28
  6. Step 6: Final answer
    x = 32,274.12

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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.