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Finding the Fourth Proportional to 67,087.44, 100,645.74 and 20,343.96

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Solution

The fourth proportional to 67,087.44, 100,645.74 and 20,343.96 is: 30,520.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,087.44 : 100,645.74 = 20,343.96 : x
  2. Step 2: Convert to fraction form
    67,087.44/100,645.74 = 20,343.96/x
  3. Step 3: Cross multiply
    67,087.44x = 100,645.74 × 20,343.96
  4. Step 4: Simplify right side
    67,087.44x = 2,047,532,908.73
  5. Step 5: Solve for x
    x = 2,047,532,908.73/67,087.44
  6. Step 6: Final answer
    x = 30,520.36

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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.