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Finding the Fourth Proportional to 81,182.65, 111,959.26 and 67,615.73

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Solution

The fourth proportional to 81,182.65, 111,959.26 and 67,615.73 is: 93,249.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,182.65 : 111,959.26 = 67,615.73 : x
  2. Step 2: Convert to fraction form
    81,182.65/111,959.26 = 67,615.73/x
  3. Step 3: Cross multiply
    81,182.65x = 111,959.26 × 67,615.73
  4. Step 4: Simplify right side
    81,182.65x = 7,570,206,366.32
  5. Step 5: Solve for x
    x = 7,570,206,366.32/81,182.65
  6. Step 6: Final answer
    x = 93,249.07

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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.