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Finding the Fourth Proportional to 67,267.38, 100,877.40 and 19,869.87

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Solution

The fourth proportional to 67,267.38, 100,877.40 and 19,869.87 is: 29,797.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,267.38 : 100,877.40 = 19,869.87 : x
  2. Step 2: Convert to fraction form
    67,267.38/100,877.40 = 19,869.87/x
  3. Step 3: Cross multiply
    67,267.38x = 100,877.40 × 19,869.87
  4. Step 4: Simplify right side
    67,267.38x = 2,004,420,823.94
  5. Step 5: Solve for x
    x = 2,004,420,823.94/67,267.38
  6. Step 6: Final answer
    x = 29,797.81

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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.