Home / 57,215.46-78,959.21-31,724.20

Finding the Fourth Proportional to 57,215.46, 78,959.21 and 31,724.20

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Solution

The fourth proportional to 57,215.46, 78,959.21 and 31,724.20 is: 43,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,215.46 : 78,959.21 = 31,724.20 : x
  2. Step 2: Convert to fraction form
    57,215.46/78,959.21 = 31,724.20/x
  3. Step 3: Cross multiply
    57,215.46x = 78,959.21 × 31,724.20
  4. Step 4: Simplify right side
    57,215.46x = 2,504,917,769.88
  5. Step 5: Solve for x
    x = 2,504,917,769.88/57,215.46
  6. Step 6: Final answer
    x = 43,780.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.