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Finding the Fourth Proportional to 67,174.80, 100,765.80 and 20,424.12

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Solution

The fourth proportional to 67,174.80, 100,765.80 and 20,424.12 is: 30,637.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,174.80 : 100,765.80 = 20,424.12 : x
  2. Step 2: Convert to fraction form
    67,174.80/100,765.80 = 20,424.12/x
  3. Step 3: Cross multiply
    67,174.80x = 100,765.80 × 20,424.12
  4. Step 4: Simplify right side
    67,174.80x = 2,058,052,791.10
  5. Step 5: Solve for x
    x = 2,058,052,791.10/67,174.80
  6. Step 6: Final answer
    x = 30,637.27

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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.