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Finding the Fourth Proportional to 67,069.44, 100,593 and 20,311.20

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Solution

The fourth proportional to 67,069.44, 100,593 and 20,311.20 is: 30,463.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,069.44 : 100,593 = 20,311.20 : x
  2. Step 2: Convert to fraction form
    67,069.44/100,593 = 20,311.20/x
  3. Step 3: Cross multiply
    67,069.44x = 100,593 × 20,311.20
  4. Step 4: Simplify right side
    67,069.44x = 2,043,164,541.60
  5. Step 5: Solve for x
    x = 2,043,164,541.60/67,069.44
  6. Step 6: Final answer
    x = 30,463.42

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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.