Home / 80,719.29-120,973.64-50,311.86

Finding the Fourth Proportional to 80,719.29, 120,973.64 and 50,311.86

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Solution

The fourth proportional to 80,719.29, 120,973.64 and 50,311.86 is: 75,402.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,719.29 : 120,973.64 = 50,311.86 : x
  2. Step 2: Convert to fraction form
    80,719.29/120,973.64 = 50,311.86/x
  3. Step 3: Cross multiply
    80,719.29x = 120,973.64 × 50,311.86
  4. Step 4: Simplify right side
    80,719.29x = 6,086,408,587.81
  5. Step 5: Solve for x
    x = 6,086,408,587.81/80,719.29
  6. Step 6: Final answer
    x = 75,402.16

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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.