Home / 72,589.07-108,883.61-19,998.56

Finding the Fourth Proportional to 72,589.07, 108,883.61 and 19,998.56

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Solution

The fourth proportional to 72,589.07, 108,883.61 and 19,998.56 is: 29,997.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,589.07 : 108,883.61 = 19,998.56 : x
  2. Step 2: Convert to fraction form
    72,589.07/108,883.61 = 19,998.56/x
  3. Step 3: Cross multiply
    72,589.07x = 108,883.61 × 19,998.56
  4. Step 4: Simplify right side
    72,589.07x = 2,177,515,407.60
  5. Step 5: Solve for x
    x = 2,177,515,407.60/72,589.07
  6. Step 6: Final answer
    x = 29,997.84

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Similar ratio
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1.5x scale

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.