Home / 80,584.07-120,875.96-21,419.73

Finding the Fourth Proportional to 80,584.07, 120,875.96 and 21,419.73

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Solution

The fourth proportional to 80,584.07, 120,875.96 and 21,419.73 is: 32,129.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,584.07 : 120,875.96 = 21,419.73 : x
  2. Step 2: Convert to fraction form
    80,584.07/120,875.96 = 21,419.73/x
  3. Step 3: Cross multiply
    80,584.07x = 120,875.96 × 21,419.73
  4. Step 4: Simplify right side
    80,584.07x = 2,589,130,319.59
  5. Step 5: Solve for x
    x = 2,589,130,319.59/80,584.07
  6. Step 6: Final answer
    x = 32,129.56

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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.