Home / 72,660.11-108,990.02-20,069.44

Finding the Fourth Proportional to 72,660.11, 108,990.02 and 20,069.44

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Solution

The fourth proportional to 72,660.11, 108,990.02 and 20,069.44 is: 30,104.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,660.11 : 108,990.02 = 20,069.44 : x
  2. Step 2: Convert to fraction form
    72,660.11/108,990.02 = 20,069.44/x
  3. Step 3: Cross multiply
    72,660.11x = 108,990.02 × 20,069.44
  4. Step 4: Simplify right side
    72,660.11x = 2,187,368,444.69
  5. Step 5: Solve for x
    x = 2,187,368,444.69/72,660.11
  6. Step 6: Final answer
    x = 30,104.12

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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.