Home / 80,025.30-120,055.77-30,105.81

Finding the Fourth Proportional to 80,025.30, 120,055.77 and 30,105.81

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Solution

The fourth proportional to 80,025.30, 120,055.77 and 30,105.81 is: 45,165.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,025.30 : 120,055.77 = 30,105.81 : x
  2. Step 2: Convert to fraction form
    80,025.30/120,055.77 = 30,105.81/x
  3. Step 3: Cross multiply
    80,025.30x = 120,055.77 × 30,105.81
  4. Step 4: Simplify right side
    80,025.30x = 3,614,376,201.02
  5. Step 5: Solve for x
    x = 3,614,376,201.02/80,025.30
  6. Step 6: Final answer
    x = 45,165.42

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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.