Home / 80,973.31-121,446.19-21,795.79

Finding the Fourth Proportional to 80,973.31, 121,446.19 and 21,795.79

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Solution

The fourth proportional to 80,973.31, 121,446.19 and 21,795.79 is: 32,689.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,973.31 : 121,446.19 = 21,795.79 : x
  2. Step 2: Convert to fraction form
    80,973.31/121,446.19 = 21,795.79/x
  3. Step 3: Cross multiply
    80,973.31x = 121,446.19 × 21,795.79
  4. Step 4: Simplify right side
    80,973.31x = 2,647,015,653.54
  5. Step 5: Solve for x
    x = 2,647,015,653.54/80,973.31
  6. Step 6: Final answer
    x = 32,689.98

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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.