Home / 72,128.54-108,203.04-22,212.70

Finding the Fourth Proportional to 72,128.54, 108,203.04 and 22,212.70

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Solution

The fourth proportional to 72,128.54, 108,203.04 and 22,212.70 is: 33,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,128.54 : 108,203.04 = 22,212.70 : x
  2. Step 2: Convert to fraction form
    72,128.54/108,203.04 = 22,212.70/x
  3. Step 3: Cross multiply
    72,128.54x = 108,203.04 × 22,212.70
  4. Step 4: Simplify right side
    72,128.54x = 2,403,481,396.10
  5. Step 5: Solve for x
    x = 2,403,481,396.10/72,128.54
  6. Step 6: Final answer
    x = 33,322.20

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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.