Home / 82,979.56-124,469.36-20,650.06

Finding the Fourth Proportional to 82,979.56, 124,469.36 and 20,650.06

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Solution

The fourth proportional to 82,979.56, 124,469.36 and 20,650.06 is: 30,975.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,979.56 : 124,469.36 = 20,650.06 : x
  2. Step 2: Convert to fraction form
    82,979.56/124,469.36 = 20,650.06/x
  3. Step 3: Cross multiply
    82,979.56x = 124,469.36 × 20,650.06
  4. Step 4: Simplify right side
    82,979.56x = 2,570,299,752.16
  5. Step 5: Solve for x
    x = 2,570,299,752.16/82,979.56
  6. Step 6: Final answer
    x = 30,975.09

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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.