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Finding the Fourth Proportional to 80,633.40, 120,935.70 and 50,998.20

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Solution

The fourth proportional to 80,633.40, 120,935.70 and 50,998.20 is: 76,488.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,633.40 : 120,935.70 = 50,998.20 : x
  2. Step 2: Convert to fraction form
    80,633.40/120,935.70 = 50,998.20/x
  3. Step 3: Cross multiply
    80,633.40x = 120,935.70 × 50,998.20
  4. Step 4: Simplify right side
    80,633.40x = 6,167,503,015.74
  5. Step 5: Solve for x
    x = 6,167,503,015.74/80,633.40
  6. Step 6: Final answer
    x = 76,488.19

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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.