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Finding the Fourth Proportional to 81,608.70, 122,179.45 and 50,232.70

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Solution

The fourth proportional to 81,608.70, 122,179.45 and 50,232.70 is: 75,205.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,608.70 : 122,179.45 = 50,232.70 : x
  2. Step 2: Convert to fraction form
    81,608.70/122,179.45 = 50,232.70/x
  3. Step 3: Cross multiply
    81,608.70x = 122,179.45 × 50,232.70
  4. Step 4: Simplify right side
    81,608.70x = 6,137,403,658.02
  5. Step 5: Solve for x
    x = 6,137,403,658.02/81,608.70
  6. Step 6: Final answer
    x = 75,205.26

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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.