Home / 80,966.88-121,439.36-21,806.12

Finding the Fourth Proportional to 80,966.88, 121,439.36 and 21,806.12

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Solution

The fourth proportional to 80,966.88, 121,439.36 and 21,806.12 is: 32,706.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,966.88 : 121,439.36 = 21,806.12 : x
  2. Step 2: Convert to fraction form
    80,966.88/121,439.36 = 21,806.12/x
  3. Step 3: Cross multiply
    80,966.88x = 121,439.36 × 21,806.12
  4. Step 4: Simplify right side
    80,966.88x = 2,648,121,256.88
  5. Step 5: Solve for x
    x = 2,648,121,256.88/80,966.88
  6. Step 6: Final answer
    x = 32,706.23

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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.