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Finding the Fourth Proportional to 54,128,440.60, 81,192,660.90 and 54,128,440.60

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Solution

The fourth proportional to 54,128,440.60, 81,192,660.90 and 54,128,440.60 is: 81,192,660.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,128,440.60 : 81,192,660.90 = 54,128,440.60 : x
  2. Step 2: Convert to fraction form
    54,128,440.60/81,192,660.90 = 54,128,440.60/x
  3. Step 3: Cross multiply
    54,128,440.60x = 81,192,660.90 × 54,128,440.60
  4. Step 4: Simplify right side
    54,128,440.60x = 4,394,832,122,681,593
  5. Step 5: Solve for x
    x = 4,394,832,122,681,593/54,128,440.60
  6. Step 6: Final answer
    x = 81,192,660.90

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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.