Home / 78,166,452.45-117,250,676.49-20,658,226.75

Finding the Fourth Proportional to 78,166,452.45, 117,250,676.49 and 20,658,226.75

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Solution

The fourth proportional to 78,166,452.45, 117,250,676.49 and 20,658,226.75 is: 30,987,603.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,452.45 : 117,250,676.49 = 20,658,226.75 : x
  2. Step 2: Convert to fraction form
    78,166,452.45/117,250,676.49 = 20,658,226.75/x
  3. Step 3: Cross multiply
    78,166,452.45x = 117,250,676.49 × 20,658,226.75
  4. Step 4: Simplify right side
    78,166,452.45x = 2,422,191,061,521,314
  5. Step 5: Solve for x
    x = 2,422,191,061,521,314/78,166,452.45
  6. Step 6: Final answer
    x = 30,987,603.83

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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.