Home / 80,922.54-121,391.04-21,756.90

Finding the Fourth Proportional to 80,922.54, 121,391.04 and 21,756.90

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Solution

The fourth proportional to 80,922.54, 121,391.04 and 21,756.90 is: 32,637.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,922.54 : 121,391.04 = 21,756.90 : x
  2. Step 2: Convert to fraction form
    80,922.54/121,391.04 = 21,756.90/x
  3. Step 3: Cross multiply
    80,922.54x = 121,391.04 × 21,756.90
  4. Step 4: Simplify right side
    80,922.54x = 2,641,092,718.18
  5. Step 5: Solve for x
    x = 2,641,092,718.18/80,922.54
  6. Step 6: Final answer
    x = 32,637.29

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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.