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Finding the Fourth Proportional to 67,100.50, 100,651.36 and 20,353.38

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Solution

The fourth proportional to 67,100.50, 100,651.36 and 20,353.38 is: 30,530.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,100.50 : 100,651.36 = 20,353.38 : x
  2. Step 2: Convert to fraction form
    67,100.50/100,651.36 = 20,353.38/x
  3. Step 3: Cross multiply
    67,100.50x = 100,651.36 × 20,353.38
  4. Step 4: Simplify right side
    67,100.50x = 2,048,595,377.60
  5. Step 5: Solve for x
    x = 2,048,595,377.60/67,100.50
  6. Step 6: Final answer
    x = 30,530.26

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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.