Home / 81,986.24-122,875.74-43,940.96

Finding the Fourth Proportional to 81,986.24, 122,875.74 and 43,940.96

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Solution

The fourth proportional to 81,986.24, 122,875.74 and 43,940.96 is: 65,855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,986.24 : 122,875.74 = 43,940.96 : x
  2. Step 2: Convert to fraction form
    81,986.24/122,875.74 = 43,940.96/x
  3. Step 3: Cross multiply
    81,986.24x = 122,875.74 × 43,940.96
  4. Step 4: Simplify right side
    81,986.24x = 5,399,277,361.93
  5. Step 5: Solve for x
    x = 5,399,277,361.93/81,986.24
  6. Step 6: Final answer
    x = 65,855.90

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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.