Home / 78,682,691.66-108,538,524.55-55,196,196.41

Finding the Fourth Proportional to 78,682,691.66, 108,538,524.55 and 55,196,196.41

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Solution

The fourth proportional to 78,682,691.66, 108,538,524.55 and 55,196,196.41 is: 76,140,172.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,682,691.66 : 108,538,524.55 = 55,196,196.41 : x
  2. Step 2: Convert to fraction form
    78,682,691.66/108,538,524.55 = 55,196,196.41/x
  3. Step 3: Cross multiply
    78,682,691.66x = 108,538,524.55 × 55,196,196.41
  4. Step 4: Simplify right side
    78,682,691.66x = 5,990,913,718,843,111
  5. Step 5: Solve for x
    x = 5,990,913,718,843,111/78,682,691.66
  6. Step 6: Final answer
    x = 76,140,172.54

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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.