Home / 81,722.25-112,750.79-49,875.21

Finding the Fourth Proportional to 81,722.25, 112,750.79 and 49,875.21

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Solution

The fourth proportional to 81,722.25, 112,750.79 and 49,875.21 is: 68,811.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,722.25 : 112,750.79 = 49,875.21 : x
  2. Step 2: Convert to fraction form
    81,722.25/112,750.79 = 49,875.21/x
  3. Step 3: Cross multiply
    81,722.25x = 112,750.79 × 49,875.21
  4. Step 4: Simplify right side
    81,722.25x = 5,623,469,079.54
  5. Step 5: Solve for x
    x = 5,623,469,079.54/81,722.25
  6. Step 6: Final answer
    x = 68,811.97

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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.