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Finding the Fourth Proportional to 67,990.70, 101,977.25 and 18,074.86

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Solution

The fourth proportional to 67,990.70, 101,977.25 and 18,074.86 is: 27,109.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,990.70 : 101,977.25 = 18,074.86 : x
  2. Step 2: Convert to fraction form
    67,990.70/101,977.25 = 18,074.86/x
  3. Step 3: Cross multiply
    67,990.70x = 101,977.25 × 18,074.86
  4. Step 4: Simplify right side
    67,990.70x = 1,843,224,171.62
  5. Step 5: Solve for x
    x = 1,843,224,171.62/67,990.70
  6. Step 6: Final answer
    x = 27,109.94

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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.