Home / 74,091.92-111,133.97-20,787.61

Finding the Fourth Proportional to 74,091.92, 111,133.97 and 20,787.61

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Solution

The fourth proportional to 74,091.92, 111,133.97 and 20,787.61 is: 31,180.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,091.92 : 111,133.97 = 20,787.61 : x
  2. Step 2: Convert to fraction form
    74,091.92/111,133.97 = 20,787.61/x
  3. Step 3: Cross multiply
    74,091.92x = 111,133.97 × 20,787.61
  4. Step 4: Simplify right side
    74,091.92x = 2,310,209,522.17
  5. Step 5: Solve for x
    x = 2,310,209,522.17/74,091.92
  6. Step 6: Final answer
    x = 31,180.32

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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.