Home / 81,351.05-122,020.43-25,191.63

Finding the Fourth Proportional to 81,351.05, 122,020.43 and 25,191.63

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Solution

The fourth proportional to 81,351.05, 122,020.43 and 25,191.63 is: 37,785.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,351.05 : 122,020.43 = 25,191.63 : x
  2. Step 2: Convert to fraction form
    81,351.05/122,020.43 = 25,191.63/x
  3. Step 3: Cross multiply
    81,351.05x = 122,020.43 × 25,191.63
  4. Step 4: Simplify right side
    81,351.05x = 3,073,893,399.04
  5. Step 5: Solve for x
    x = 3,073,893,399.04/81,351.05
  6. Step 6: Final answer
    x = 37,785.54

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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.