Home / 81,986.48-122,982.75-28,668.03

Finding the Fourth Proportional to 81,986.48, 122,982.75 and 28,668.03

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Solution

The fourth proportional to 81,986.48, 122,982.75 and 28,668.03 is: 43,003.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,986.48 : 122,982.75 = 28,668.03 : x
  2. Step 2: Convert to fraction form
    81,986.48/122,982.75 = 28,668.03/x
  3. Step 3: Cross multiply
    81,986.48x = 122,982.75 × 28,668.03
  4. Step 4: Simplify right side
    81,986.48x = 3,525,673,166.48
  5. Step 5: Solve for x
    x = 3,525,673,166.48/81,986.48
  6. Step 6: Final answer
    x = 43,003.11

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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.