Home / 78,682,687.92-108,538,519.41-55,196,192.66

Finding the Fourth Proportional to 78,682,687.92, 108,538,519.41 and 55,196,192.66

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Solution

The fourth proportional to 78,682,687.92, 108,538,519.41 and 55,196,192.66 is: 76,140,167.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,682,687.92 : 108,538,519.41 = 55,196,192.66 : x
  2. Step 2: Convert to fraction form
    78,682,687.92/108,538,519.41 = 55,196,192.66/x
  3. Step 3: Cross multiply
    78,682,687.92x = 108,538,519.41 × 55,196,192.66
  4. Step 4: Simplify right side
    78,682,687.92x = 5,990,913,028,833,561
  5. Step 5: Solve for x
    x = 5,990,913,028,833,561/78,682,687.92
  6. Step 6: Final answer
    x = 76,140,167.39

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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.