Home / 72,144.20-108,143.40-32,729.60

Finding the Fourth Proportional to 72,144.20, 108,143.40 and 32,729.60

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Solution

The fourth proportional to 72,144.20, 108,143.40 and 32,729.60 is: 49,061.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,144.20 : 108,143.40 = 32,729.60 : x
  2. Step 2: Convert to fraction form
    72,144.20/108,143.40 = 32,729.60/x
  3. Step 3: Cross multiply
    72,144.20x = 108,143.40 × 32,729.60
  4. Step 4: Simplify right side
    72,144.20x = 3,539,490,224.64
  5. Step 5: Solve for x
    x = 3,539,490,224.64/72,144.20
  6. Step 6: Final answer
    x = 49,061.33

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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.