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Finding the Fourth Proportional to 83,745.78, 125,516.46 and 39,313.22

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Solution

The fourth proportional to 83,745.78, 125,516.46 and 39,313.22 is: 58,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,745.78 : 125,516.46 = 39,313.22 : x
  2. Step 2: Convert to fraction form
    83,745.78/125,516.46 = 39,313.22/x
  3. Step 3: Cross multiply
    83,745.78x = 125,516.46 × 39,313.22
  4. Step 4: Simplify right side
    83,745.78x = 4,934,456,205.60
  5. Step 5: Solve for x
    x = 4,934,456,205.60/83,745.78
  6. Step 6: Final answer
    x = 58,921.85

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1.5x scale

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.