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Finding the Fourth Proportional to 71,115,906.40, 106,673,859.60 and 53,200,002.40

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Solution

The fourth proportional to 71,115,906.40, 106,673,859.60 and 53,200,002.40 is: 79,800,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,115,906.40 : 106,673,859.60 = 53,200,002.40 : x
  2. Step 2: Convert to fraction form
    71,115,906.40/106,673,859.60 = 53,200,002.40/x
  3. Step 3: Cross multiply
    71,115,906.40x = 106,673,859.60 × 53,200,002.40
  4. Step 4: Simplify right side
    71,115,906.40x = 5,675,049,586,737,263
  5. Step 5: Solve for x
    x = 5,675,049,586,737,263/71,115,906.40
  6. Step 6: Final answer
    x = 79,800,003.60

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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.