Home / 81,716.58-112,781.07-49,903.92

Finding the Fourth Proportional to 81,716.58, 112,781.07 and 49,903.92

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Solution

The fourth proportional to 81,716.58, 112,781.07 and 49,903.92 is: 68,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,716.58 : 112,781.07 = 49,903.92 : x
  2. Step 2: Convert to fraction form
    81,716.58/112,781.07 = 49,903.92/x
  3. Step 3: Cross multiply
    81,716.58x = 112,781.07 × 49,903.92
  4. Step 4: Simplify right side
    81,716.58x = 5,628,217,494.79
  5. Step 5: Solve for x
    x = 5,628,217,494.79/81,716.58
  6. Step 6: Final answer
    x = 68,874.85

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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.