Home / 81,520.35-122,149.31-50,289.99

Finding the Fourth Proportional to 81,520.35, 122,149.31 and 50,289.99

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Solution

The fourth proportional to 81,520.35, 122,149.31 and 50,289.99 is: 75,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,520.35 : 122,149.31 = 50,289.99 : x
  2. Step 2: Convert to fraction form
    81,520.35/122,149.31 = 50,289.99/x
  3. Step 3: Cross multiply
    81,520.35x = 122,149.31 × 50,289.99
  4. Step 4: Simplify right side
    81,520.35x = 6,142,887,326.96
  5. Step 5: Solve for x
    x = 6,142,887,326.96/81,520.35
  6. Step 6: Final answer
    x = 75,354.04

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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.