Home / 72,861.33-109,292.19-20,270.82

Finding the Fourth Proportional to 72,861.33, 109,292.19 and 20,270.82

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Solution

The fourth proportional to 72,861.33, 109,292.19 and 20,270.82 is: 30,406.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,861.33 : 109,292.19 = 20,270.82 : x
  2. Step 2: Convert to fraction form
    72,861.33/109,292.19 = 20,270.82/x
  3. Step 3: Cross multiply
    72,861.33x = 109,292.19 × 20,270.82
  4. Step 4: Simplify right side
    72,861.33x = 2,215,442,310.90
  5. Step 5: Solve for x
    x = 2,215,442,310.90/72,861.33
  6. Step 6: Final answer
    x = 30,406.28

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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.