Home / 81,998.40-113,163.28-45,705.44

Finding the Fourth Proportional to 81,998.40, 113,163.28 and 45,705.44

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Solution

The fourth proportional to 81,998.40, 113,163.28 and 45,705.44 is: 63,076.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,998.40 : 113,163.28 = 45,705.44 : x
  2. Step 2: Convert to fraction form
    81,998.40/113,163.28 = 45,705.44/x
  3. Step 3: Cross multiply
    81,998.40x = 113,163.28 × 45,705.44
  4. Step 4: Simplify right side
    81,998.40x = 5,172,177,504.24
  5. Step 5: Solve for x
    x = 5,172,177,504.24/81,998.40
  6. Step 6: Final answer
    x = 63,076.57

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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.