Home / 82,829.25-124,245.09-20,499.75

Finding the Fourth Proportional to 82,829.25, 124,245.09 and 20,499.75

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Solution

The fourth proportional to 82,829.25, 124,245.09 and 20,499.75 is: 30,749.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,829.25 : 124,245.09 = 20,499.75 : x
  2. Step 2: Convert to fraction form
    82,829.25/124,245.09 = 20,499.75/x
  3. Step 3: Cross multiply
    82,829.25x = 124,245.09 × 20,499.75
  4. Step 4: Simplify right side
    82,829.25x = 2,546,993,283.73
  5. Step 5: Solve for x
    x = 2,546,993,283.73/82,829.25
  6. Step 6: Final answer
    x = 30,749.93

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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.