Home / 80,955.90-121,433.76-21,791.52

Finding the Fourth Proportional to 80,955.90, 121,433.76 and 21,791.52

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Solution

The fourth proportional to 80,955.90, 121,433.76 and 21,791.52 is: 32,687.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,955.90 : 121,433.76 = 21,791.52 : x
  2. Step 2: Convert to fraction form
    80,955.90/121,433.76 = 21,791.52/x
  3. Step 3: Cross multiply
    80,955.90x = 121,433.76 × 21,791.52
  4. Step 4: Simplify right side
    80,955.90x = 2,646,226,209.72
  5. Step 5: Solve for x
    x = 2,646,226,209.72/80,955.90
  6. Step 6: Final answer
    x = 32,687.26

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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.