Home / 81,318.13-121,947.22-27,994.92

Finding the Fourth Proportional to 81,318.13, 121,947.22 and 27,994.92

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Solution

The fourth proportional to 81,318.13, 121,947.22 and 27,994.92 is: 41,982.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,318.13 : 121,947.22 = 27,994.92 : x
  2. Step 2: Convert to fraction form
    81,318.13/121,947.22 = 27,994.92/x
  3. Step 3: Cross multiply
    81,318.13x = 121,947.22 × 27,994.92
  4. Step 4: Simplify right side
    81,318.13x = 3,413,902,245.81
  5. Step 5: Solve for x
    x = 3,413,902,245.81/81,318.13
  6. Step 6: Final answer
    x = 41,982.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.