Home / 78,272,078.82-117,388,716.30-26,455,530.39

Finding the Fourth Proportional to 78,272,078.82, 117,388,716.30 and 26,455,530.39

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Solution

The fourth proportional to 78,272,078.82, 117,388,716.30 and 26,455,530.39 is: 39,676,737.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,272,078.82 : 117,388,716.30 = 26,455,530.39 : x
  2. Step 2: Convert to fraction form
    78,272,078.82/117,388,716.30 = 26,455,530.39/x
  3. Step 3: Cross multiply
    78,272,078.82x = 117,388,716.30 × 26,455,530.39
  4. Step 4: Simplify right side
    78,272,078.82x = 3,105,580,751,517,738.50
  5. Step 5: Solve for x
    x = 3,105,580,751,517,738.50/78,272,078.82
  6. Step 6: Final answer
    x = 39,676,737.84

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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.