Home / 80,962.88-121,433.36-21,802.12

Finding the Fourth Proportional to 80,962.88, 121,433.36 and 21,802.12

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Solution

The fourth proportional to 80,962.88, 121,433.36 and 21,802.12 is: 32,700.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,962.88 : 121,433.36 = 21,802.12 : x
  2. Step 2: Convert to fraction form
    80,962.88/121,433.36 = 21,802.12/x
  3. Step 3: Cross multiply
    80,962.88x = 121,433.36 × 21,802.12
  4. Step 4: Simplify right side
    80,962.88x = 2,647,504,686.72
  5. Step 5: Solve for x
    x = 2,647,504,686.72/80,962.88
  6. Step 6: Final answer
    x = 32,700.23

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1.5x scale

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.