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Finding the Fourth Proportional to 60,579,997.20, 90,870,514.20 and 20,190,481.20

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Solution

The fourth proportional to 60,579,997.20, 90,870,514.20 and 20,190,481.20 is: 30,285,894.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,579,997.20 : 90,870,514.20 = 20,190,481.20 : x
  2. Step 2: Convert to fraction form
    60,579,997.20/90,870,514.20 = 20,190,481.20/x
  3. Step 3: Cross multiply
    60,579,997.20x = 90,870,514.20 × 20,190,481.20
  4. Step 4: Simplify right side
    60,579,997.20x = 1,834,719,408,589,433
  5. Step 5: Solve for x
    x = 1,834,719,408,589,433/60,579,997.20
  6. Step 6: Final answer
    x = 30,285,894.58

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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.