Home / 76,982.86-115,485.90-32,609.80

Finding the Fourth Proportional to 76,982.86, 115,485.90 and 32,609.80

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Solution

The fourth proportional to 76,982.86, 115,485.90 and 32,609.80 is: 48,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,982.86 : 115,485.90 = 32,609.80 : x
  2. Step 2: Convert to fraction form
    76,982.86/115,485.90 = 32,609.80/x
  3. Step 3: Cross multiply
    76,982.86x = 115,485.90 × 32,609.80
  4. Step 4: Simplify right side
    76,982.86x = 3,765,972,101.82
  5. Step 5: Solve for x
    x = 3,765,972,101.82/76,982.86
  6. Step 6: Final answer
    x = 48,919.62

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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.