Home / 84,082.81-126,120.56-20,901.59

Finding the Fourth Proportional to 84,082.81, 126,120.56 and 20,901.59

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Solution

The fourth proportional to 84,082.81, 126,120.56 and 20,901.59 is: 31,351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,082.81 : 126,120.56 = 20,901.59 : x
  2. Step 2: Convert to fraction form
    84,082.81/126,120.56 = 20,901.59/x
  3. Step 3: Cross multiply
    84,082.81x = 126,120.56 × 20,901.59
  4. Step 4: Simplify right side
    84,082.81x = 2,636,120,235.69
  5. Step 5: Solve for x
    x = 2,636,120,235.69/84,082.81
  6. Step 6: Final answer
    x = 31,351.48

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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.