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Finding the Fourth Proportional to 67,889.06, 101,793.89 and 20,489.94

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Solution

The fourth proportional to 67,889.06, 101,793.89 and 20,489.94 is: 30,722.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,889.06 : 101,793.89 = 20,489.94 : x
  2. Step 2: Convert to fraction form
    67,889.06/101,793.89 = 20,489.94/x
  3. Step 3: Cross multiply
    67,889.06x = 101,793.89 × 20,489.94
  4. Step 4: Simplify right side
    67,889.06x = 2,085,750,405.77
  5. Step 5: Solve for x
    x = 2,085,750,405.77/67,889.06
  6. Step 6: Final answer
    x = 30,722.92

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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.