Home / 78,166,453.08-117,250,677.44-20,658,227.38

Finding the Fourth Proportional to 78,166,453.08, 117,250,677.44 and 20,658,227.38

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Solution

The fourth proportional to 78,166,453.08, 117,250,677.44 and 20,658,227.38 is: 30,987,604.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,453.08 : 117,250,677.44 = 20,658,227.38 : x
  2. Step 2: Convert to fraction form
    78,166,453.08/117,250,677.44 = 20,658,227.38/x
  3. Step 3: Cross multiply
    78,166,453.08x = 117,250,677.44 × 20,658,227.38
  4. Step 4: Simplify right side
    78,166,453.08x = 2,422,191,155,014,556
  5. Step 5: Solve for x
    x = 2,422,191,155,014,556/78,166,453.08
  6. Step 6: Final answer
    x = 30,987,604.78

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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.