Home / 81,839.48-122,562.08-55,464.26

Finding the Fourth Proportional to 81,839.48, 122,562.08 and 55,464.26

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Solution

The fourth proportional to 81,839.48, 122,562.08 and 55,464.26 is: 83,062.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,839.48 : 122,562.08 = 55,464.26 : x
  2. Step 2: Convert to fraction form
    81,839.48/122,562.08 = 55,464.26/x
  3. Step 3: Cross multiply
    81,839.48x = 122,562.08 × 55,464.26
  4. Step 4: Simplify right side
    81,839.48x = 6,797,814,389.12
  5. Step 5: Solve for x
    x = 6,797,814,389.12/81,839.48
  6. Step 6: Final answer
    x = 83,062.78

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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.