Home / 85,195.26-127,748.39-31,843.40

Finding the Fourth Proportional to 85,195.26, 127,748.39 and 31,843.40

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Solution

The fourth proportional to 85,195.26, 127,748.39 and 31,843.40 is: 47,748.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,195.26 : 127,748.39 = 31,843.40 : x
  2. Step 2: Convert to fraction form
    85,195.26/127,748.39 = 31,843.40/x
  3. Step 3: Cross multiply
    85,195.26x = 127,748.39 × 31,843.40
  4. Step 4: Simplify right side
    85,195.26x = 4,067,942,284.17
  5. Step 5: Solve for x
    x = 4,067,942,284.17/85,195.26
  6. Step 6: Final answer
    x = 47,748.46

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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.