Home / 81,131.48-111,875.44-55,674.97

Finding the Fourth Proportional to 81,131.48, 111,875.44 and 55,674.97

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Solution

The fourth proportional to 81,131.48, 111,875.44 and 55,674.97 is: 76,772.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,131.48 : 111,875.44 = 55,674.97 : x
  2. Step 2: Convert to fraction form
    81,131.48/111,875.44 = 55,674.97/x
  3. Step 3: Cross multiply
    81,131.48x = 111,875.44 × 55,674.97
  4. Step 4: Simplify right side
    81,131.48x = 6,228,661,206.36
  5. Step 5: Solve for x
    x = 6,228,661,206.36/81,131.48
  6. Step 6: Final answer
    x = 76,772.43

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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.