Home / 81,719.76-112,777.84-49,879.52

Finding the Fourth Proportional to 81,719.76, 112,777.84 and 49,879.52

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Solution

The fourth proportional to 81,719.76, 112,777.84 and 49,879.52 is: 68,836.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,719.76 : 112,777.84 = 49,879.52 : x
  2. Step 2: Convert to fraction form
    81,719.76/112,777.84 = 49,879.52/x
  3. Step 3: Cross multiply
    81,719.76x = 112,777.84 × 49,879.52
  4. Step 4: Simplify right side
    81,719.76x = 5,625,304,525.84
  5. Step 5: Solve for x
    x = 5,625,304,525.84/81,719.76
  6. Step 6: Final answer
    x = 68,836.53

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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.