Home / 80,971.06-121,442.82-21,793.54

Finding the Fourth Proportional to 80,971.06, 121,442.82 and 21,793.54

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Solution

The fourth proportional to 80,971.06, 121,442.82 and 21,793.54 is: 32,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,971.06 : 121,442.82 = 21,793.54 : x
  2. Step 2: Convert to fraction form
    80,971.06/121,442.82 = 21,793.54/x
  3. Step 3: Cross multiply
    80,971.06x = 121,442.82 × 21,793.54
  4. Step 4: Simplify right side
    80,971.06x = 2,646,668,955.38
  5. Step 5: Solve for x
    x = 2,646,668,955.38/80,971.06
  6. Step 6: Final answer
    x = 32,686.60

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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.