Home / 82,939.75-114,456.89-47,129.80

Finding the Fourth Proportional to 82,939.75, 114,456.89 and 47,129.80

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Solution

The fourth proportional to 82,939.75, 114,456.89 and 47,129.80 is: 65,039.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,939.75 : 114,456.89 = 47,129.80 : x
  2. Step 2: Convert to fraction form
    82,939.75/114,456.89 = 47,129.80/x
  3. Step 3: Cross multiply
    82,939.75x = 114,456.89 × 47,129.80
  4. Step 4: Simplify right side
    82,939.75x = 5,394,330,334.32
  5. Step 5: Solve for x
    x = 5,394,330,334.32/82,939.75
  6. Step 6: Final answer
    x = 65,039.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.