Home / 87,932.72-121,293.24-71,823.44

Finding the Fourth Proportional to 87,932.72, 121,293.24 and 71,823.44

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Solution

The fourth proportional to 87,932.72, 121,293.24 and 71,823.44 is: 99,072.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,932.72 : 121,293.24 = 71,823.44 : x
  2. Step 2: Convert to fraction form
    87,932.72/121,293.24 = 71,823.44/x
  3. Step 3: Cross multiply
    87,932.72x = 121,293.24 × 71,823.44
  4. Step 4: Simplify right side
    87,932.72x = 8,711,697,745.55
  5. Step 5: Solve for x
    x = 8,711,697,745.55/87,932.72
  6. Step 6: Final answer
    x = 99,072.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.