Home / 80,993.20-121,489.74-43,501.66

Finding the Fourth Proportional to 80,993.20, 121,489.74 and 43,501.66

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Solution

The fourth proportional to 80,993.20, 121,489.74 and 43,501.66 is: 65,252.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,993.20 : 121,489.74 = 43,501.66 : x
  2. Step 2: Convert to fraction form
    80,993.20/121,489.74 = 43,501.66/x
  3. Step 3: Cross multiply
    80,993.20x = 121,489.74 × 43,501.66
  4. Step 4: Simplify right side
    80,993.20x = 5,285,005,362.97
  5. Step 5: Solve for x
    x = 5,285,005,362.97/80,993.20
  6. Step 6: Final answer
    x = 65,252.46

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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.