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Finding the Fourth Proportional to 81,671.44, 112,717.04 and 49,833.60

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Solution

The fourth proportional to 81,671.44, 112,717.04 and 49,833.60 is: 68,776.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,671.44 : 112,717.04 = 49,833.60 : x
  2. Step 2: Convert to fraction form
    81,671.44/112,717.04 = 49,833.60/x
  3. Step 3: Cross multiply
    81,671.44x = 112,717.04 × 49,833.60
  4. Step 4: Simplify right side
    81,671.44x = 5,617,095,884.54
  5. Step 5: Solve for x
    x = 5,617,095,884.54/81,671.44
  6. Step 6: Final answer
    x = 68,776.75

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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.