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Finding the Fourth Proportional to 67,074.44, 100,600.50 and 20,316.20

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Solution

The fourth proportional to 67,074.44, 100,600.50 and 20,316.20 is: 30,470.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,074.44 : 100,600.50 = 20,316.20 : x
  2. Step 2: Convert to fraction form
    67,074.44/100,600.50 = 20,316.20/x
  3. Step 3: Cross multiply
    67,074.44x = 100,600.50 × 20,316.20
  4. Step 4: Simplify right side
    67,074.44x = 2,043,819,878.10
  5. Step 5: Solve for x
    x = 2,043,819,878.10/67,074.44
  6. Step 6: Final answer
    x = 30,470.92

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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.