Home / 80,487.22-120,731.42-30,553.86

Finding the Fourth Proportional to 80,487.22, 120,731.42 and 30,553.86

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Solution

The fourth proportional to 80,487.22, 120,731.42 and 30,553.86 is: 45,831.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,487.22 : 120,731.42 = 30,553.86 : x
  2. Step 2: Convert to fraction form
    80,487.22/120,731.42 = 30,553.86/x
  3. Step 3: Cross multiply
    80,487.22x = 120,731.42 × 30,553.86
  4. Step 4: Simplify right side
    80,487.22x = 3,688,810,904.28
  5. Step 5: Solve for x
    x = 3,688,810,904.28/80,487.22
  6. Step 6: Final answer
    x = 45,831.01

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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.