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Finding the Fourth Proportional to 72,272.80, 108,441.60 and 32,809.60

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Solution

The fourth proportional to 72,272.80, 108,441.60 and 32,809.60 is: 49,229.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,272.80 : 108,441.60 = 32,809.60 : x
  2. Step 2: Convert to fraction form
    72,272.80/108,441.60 = 32,809.60/x
  3. Step 3: Cross multiply
    72,272.80x = 108,441.60 × 32,809.60
  4. Step 4: Simplify right side
    72,272.80x = 3,557,925,519.36
  5. Step 5: Solve for x
    x = 3,557,925,519.36/72,272.80
  6. Step 6: Final answer
    x = 49,229.11

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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.