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Finding the Fourth Proportional to 67,166.23, 100,745.69 and 20,415.46

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Solution

The fourth proportional to 67,166.23, 100,745.69 and 20,415.46 is: 30,622.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,166.23 : 100,745.69 = 20,415.46 : x
  2. Step 2: Convert to fraction form
    67,166.23/100,745.69 = 20,415.46/x
  3. Step 3: Cross multiply
    67,166.23x = 100,745.69 × 20,415.46
  4. Step 4: Simplify right side
    67,166.23x = 2,056,769,100.64
  5. Step 5: Solve for x
    x = 2,056,769,100.64/67,166.23
  6. Step 6: Final answer
    x = 30,622.07

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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.