Home / 78,375,331.76-117,307,120.91-57,620,290.68

Finding the Fourth Proportional to 78,375,331.76, 117,307,120.91 and 57,620,290.68

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Solution

The fourth proportional to 78,375,331.76, 117,307,120.91 and 57,620,290.68 is: 86,242,319.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,375,331.76 : 117,307,120.91 = 57,620,290.68 : x
  2. Step 2: Convert to fraction form
    78,375,331.76/117,307,120.91 = 57,620,290.68/x
  3. Step 3: Cross multiply
    78,375,331.76x = 117,307,120.91 × 57,620,290.68
  4. Step 4: Simplify right side
    78,375,331.76x = 6,759,270,405,380,005
  5. Step 5: Solve for x
    x = 6,759,270,405,380,005/78,375,331.76
  6. Step 6: Final answer
    x = 86,242,319.54

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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.