Home / 84,082.56-126,120.19-20,901.34

Finding the Fourth Proportional to 84,082.56, 126,120.19 and 20,901.34

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Solution

The fourth proportional to 84,082.56, 126,120.19 and 20,901.34 is: 31,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,082.56 : 126,120.19 = 20,901.34 : x
  2. Step 2: Convert to fraction form
    84,082.56/126,120.19 = 20,901.34/x
  3. Step 3: Cross multiply
    84,082.56x = 126,120.19 × 20,901.34
  4. Step 4: Simplify right side
    84,082.56x = 2,636,080,972.05
  5. Step 5: Solve for x
    x = 2,636,080,972.05/84,082.56
  6. Step 6: Final answer
    x = 31,351.10

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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.