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Finding the Fourth Proportional to 67,185.63, 100,749.26 and 20,427.57

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Solution

The fourth proportional to 67,185.63, 100,749.26 and 20,427.57 is: 30,632.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,185.63 : 100,749.26 = 20,427.57 : x
  2. Step 2: Convert to fraction form
    67,185.63/100,749.26 = 20,427.57/x
  3. Step 3: Cross multiply
    67,185.63x = 100,749.26 × 20,427.57
  4. Step 4: Simplify right side
    67,185.63x = 2,058,062,458.96
  5. Step 5: Solve for x
    x = 2,058,062,458.96/67,185.63
  6. Step 6: Final answer
    x = 30,632.48

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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.