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Finding the Fourth Proportional to 71,998.20, 107,808.30 and 50,823.90

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Solution

The fourth proportional to 71,998.20, 107,808.30 and 50,823.90 is: 76,102.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,998.20 : 107,808.30 = 50,823.90 : x
  2. Step 2: Convert to fraction form
    71,998.20/107,808.30 = 50,823.90/x
  3. Step 3: Cross multiply
    71,998.20x = 107,808.30 × 50,823.90
  4. Step 4: Simplify right side
    71,998.20x = 5,479,238,258.37
  5. Step 5: Solve for x
    x = 5,479,238,258.37/71,998.20
  6. Step 6: Final answer
    x = 76,102.43

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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.