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Finding the Fourth Proportional to 67,114.10, 100,671.15 and 20,369.30

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Solution

The fourth proportional to 67,114.10, 100,671.15 and 20,369.30 is: 30,553.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,114.10 : 100,671.15 = 20,369.30 : x
  2. Step 2: Convert to fraction form
    67,114.10/100,671.15 = 20,369.30/x
  3. Step 3: Cross multiply
    67,114.10x = 100,671.15 × 20,369.30
  4. Step 4: Simplify right side
    67,114.10x = 2,050,600,855.70
  5. Step 5: Solve for x
    x = 2,050,600,855.70/67,114.10
  6. Step 6: Final answer
    x = 30,553.95

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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.