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Finding the Fourth Proportional to 67,109.77, 100,679.37 and 20,366.29

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Solution

The fourth proportional to 67,109.77, 100,679.37 and 20,366.29 is: 30,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,109.77 : 100,679.37 = 20,366.29 : x
  2. Step 2: Convert to fraction form
    67,109.77/100,679.37 = 20,366.29/x
  3. Step 3: Cross multiply
    67,109.77x = 100,679.37 × 20,366.29
  4. Step 4: Simplify right side
    67,109.77x = 2,050,465,246.44
  5. Step 5: Solve for x
    x = 2,050,465,246.44/67,109.77
  6. Step 6: Final answer
    x = 30,553.90

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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.