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Finding the Fourth Proportional to 68,759,644.50, 94,901,788.62 and 39,410,648.21

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Solution

The fourth proportional to 68,759,644.50, 94,901,788.62 and 39,410,648.21 is: 54,394,420.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,759,644.50 : 94,901,788.62 = 39,410,648.21 : x
  2. Step 2: Convert to fraction form
    68,759,644.50/94,901,788.62 = 39,410,648.21/x
  3. Step 3: Cross multiply
    68,759,644.50x = 94,901,788.62 × 39,410,648.21
  4. Step 4: Simplify right side
    68,759,644.50x = 3,740,141,006,039,856
  5. Step 5: Solve for x
    x = 3,740,141,006,039,856/68,759,644.50
  6. Step 6: Final answer
    x = 54,394,420.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.