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Finding the Fourth Proportional to 81,434.96, 122,230.20 and 50,330.96

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Solution

The fourth proportional to 81,434.96, 122,230.20 and 50,330.96 is: 75,544.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,434.96 : 122,230.20 = 50,330.96 : x
  2. Step 2: Convert to fraction form
    81,434.96/122,230.20 = 50,330.96/x
  3. Step 3: Cross multiply
    81,434.96x = 122,230.20 × 50,330.96
  4. Step 4: Simplify right side
    81,434.96x = 6,151,963,306.99
  5. Step 5: Solve for x
    x = 6,151,963,306.99/81,434.96
  6. Step 6: Final answer
    x = 75,544.50

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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.