Home / 81,179.05-121,780.04-25,023.72

Finding the Fourth Proportional to 81,179.05, 121,780.04 and 25,023.72

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Solution

The fourth proportional to 81,179.05, 121,780.04 and 25,023.72 is: 37,539.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,179.05 : 121,780.04 = 25,023.72 : x
  2. Step 2: Convert to fraction form
    81,179.05/121,780.04 = 25,023.72/x
  3. Step 3: Cross multiply
    81,179.05x = 121,780.04 × 25,023.72
  4. Step 4: Simplify right side
    81,179.05x = 3,047,389,497.43
  5. Step 5: Solve for x
    x = 3,047,389,497.43/81,179.05
  6. Step 6: Final answer
    x = 37,539.11

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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.