Home / 81,826.12-122,739.33-25,670.66

Finding the Fourth Proportional to 81,826.12, 122,739.33 and 25,670.66

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Solution

The fourth proportional to 81,826.12, 122,739.33 and 25,670.66 is: 38,506.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,826.12 : 122,739.33 = 25,670.66 : x
  2. Step 2: Convert to fraction form
    81,826.12/122,739.33 = 25,670.66/x
  3. Step 3: Cross multiply
    81,826.12x = 122,739.33 × 25,670.66
  4. Step 4: Simplify right side
    81,826.12x = 3,150,798,867.01
  5. Step 5: Solve for x
    x = 3,150,798,867.01/81,826.12
  6. Step 6: Final answer
    x = 38,506.03

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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.