Home / 72,188.22-108,209.64-30,091.61

Finding the Fourth Proportional to 72,188.22, 108,209.64 and 30,091.61

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Solution

The fourth proportional to 72,188.22, 108,209.64 and 30,091.61 is: 45,107.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,188.22 : 108,209.64 = 30,091.61 : x
  2. Step 2: Convert to fraction form
    72,188.22/108,209.64 = 30,091.61/x
  3. Step 3: Cross multiply
    72,188.22x = 108,209.64 × 30,091.61
  4. Step 4: Simplify right side
    72,188.22x = 3,256,202,668.49
  5. Step 5: Solve for x
    x = 3,256,202,668.49/72,188.22
  6. Step 6: Final answer
    x = 45,107.12

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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.