Home / 80,840.33-121,218.91-43,431.92

Finding the Fourth Proportional to 80,840.33, 121,218.91 and 43,431.92

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Solution

The fourth proportional to 80,840.33, 121,218.91 and 43,431.92 is: 65,125.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,840.33 : 121,218.91 = 43,431.92 : x
  2. Step 2: Convert to fraction form
    80,840.33/121,218.91 = 43,431.92/x
  3. Step 3: Cross multiply
    80,840.33x = 121,218.91 × 43,431.92
  4. Step 4: Simplify right side
    80,840.33x = 5,264,770,001.61
  5. Step 5: Solve for x
    x = 5,264,770,001.61/80,840.33
  6. Step 6: Final answer
    x = 65,125.54

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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.