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Finding the Fourth Proportional to 84,082.37, 126,119.90 and 20,901.16

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Solution

The fourth proportional to 84,082.37, 126,119.90 and 20,901.16 is: 31,350.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,082.37 : 126,119.90 = 20,901.16 : x
  2. Step 2: Convert to fraction form
    84,082.37/126,119.90 = 20,901.16/x
  3. Step 3: Cross multiply
    84,082.37x = 126,119.90 × 20,901.16
  4. Step 4: Simplify right side
    84,082.37x = 2,636,052,209.08
  5. Step 5: Solve for x
    x = 2,636,052,209.08/84,082.37
  6. Step 6: Final answer
    x = 31,350.83

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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.