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Finding the Fourth Proportional to 79,963,228.89, 119,944,843.34 and 19,378,954.89

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Solution

The fourth proportional to 79,963,228.89, 119,944,843.34 and 19,378,954.89 is: 29,068,432.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,963,228.89 : 119,944,843.34 = 19,378,954.89 : x
  2. Step 2: Convert to fraction form
    79,963,228.89/119,944,843.34 = 19,378,954.89/x
  3. Step 3: Cross multiply
    79,963,228.89x = 119,944,843.34 × 19,378,954.89
  4. Step 4: Simplify right side
    79,963,228.89x = 2,324,405,708,373,977
  5. Step 5: Solve for x
    x = 2,324,405,708,373,977/79,963,228.89
  6. Step 6: Final answer
    x = 29,068,432.34

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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.