Home / 82,209.72-113,336.43-51,979.91

Finding the Fourth Proportional to 82,209.72, 113,336.43 and 51,979.91

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Solution

The fourth proportional to 82,209.72, 113,336.43 and 51,979.91 is: 71,660.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,209.72 : 113,336.43 = 51,979.91 : x
  2. Step 2: Convert to fraction form
    82,209.72/113,336.43 = 51,979.91/x
  3. Step 3: Cross multiply
    82,209.72x = 113,336.43 × 51,979.91
  4. Step 4: Simplify right side
    82,209.72x = 5,891,217,431.12
  5. Step 5: Solve for x
    x = 5,891,217,431.12/82,209.72
  6. Step 6: Final answer
    x = 71,660.84

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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.