Home / 81,262.35-121,940.10-43,822.26

Finding the Fourth Proportional to 81,262.35, 121,940.10 and 43,822.26

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Solution

The fourth proportional to 81,262.35, 121,940.10 and 43,822.26 is: 65,758.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,262.35 : 121,940.10 = 43,822.26 : x
  2. Step 2: Convert to fraction form
    81,262.35/121,940.10 = 43,822.26/x
  3. Step 3: Cross multiply
    81,262.35x = 121,940.10 × 43,822.26
  4. Step 4: Simplify right side
    81,262.35x = 5,343,690,766.63
  5. Step 5: Solve for x
    x = 5,343,690,766.63/81,262.35
  6. Step 6: Final answer
    x = 65,758.51

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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.