Home / 80,989.09-121,486.48-21,826.18

Finding the Fourth Proportional to 80,989.09, 121,486.48 and 21,826.18

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Solution

The fourth proportional to 80,989.09, 121,486.48 and 21,826.18 is: 32,740.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,989.09 : 121,486.48 = 21,826.18 : x
  2. Step 2: Convert to fraction form
    80,989.09/121,486.48 = 21,826.18/x
  3. Step 3: Cross multiply
    80,989.09x = 121,486.48 × 21,826.18
  4. Step 4: Simplify right side
    80,989.09x = 2,651,585,780.05
  5. Step 5: Solve for x
    x = 2,651,585,780.05/80,989.09
  6. Step 6: Final answer
    x = 32,740.04

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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.