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Finding the Fourth Proportional to 81,187.78, 112,031.22 and 50,963.44

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Solution

The fourth proportional to 81,187.78, 112,031.22 and 50,963.44 is: 70,324.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,187.78 : 112,031.22 = 50,963.44 : x
  2. Step 2: Convert to fraction form
    81,187.78/112,031.22 = 50,963.44/x
  3. Step 3: Cross multiply
    81,187.78x = 112,031.22 × 50,963.44
  4. Step 4: Simplify right side
    81,187.78x = 5,709,496,358.60
  5. Step 5: Solve for x
    x = 5,709,496,358.60/81,187.78
  6. Step 6: Final answer
    x = 70,324.58

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1.5x scale

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.