Home / 84,128.30-126,067.78-34,147.58

Finding the Fourth Proportional to 84,128.30, 126,067.78 and 34,147.58

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Solution

The fourth proportional to 84,128.30, 126,067.78 and 34,147.58 is: 51,170.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,128.30 : 126,067.78 = 34,147.58 : x
  2. Step 2: Convert to fraction form
    84,128.30/126,067.78 = 34,147.58/x
  3. Step 3: Cross multiply
    84,128.30x = 126,067.78 × 34,147.58
  4. Step 4: Simplify right side
    84,128.30x = 4,304,908,887.26
  5. Step 5: Solve for x
    x = 4,304,908,887.26/84,128.30
  6. Step 6: Final answer
    x = 51,170.76

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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.