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Finding the Fourth Proportional to 71,856,806, 99,162,392.28 and 39,261,758

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Solution

The fourth proportional to 71,856,806, 99,162,392.28 and 39,261,758 is: 54,181,226.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,856,806 : 99,162,392.28 = 39,261,758 : x
  2. Step 2: Convert to fraction form
    71,856,806/99,162,392.28 = 39,261,758/x
  3. Step 3: Cross multiply
    71,856,806x = 99,162,392.28 × 39,261,758
  4. Step 4: Simplify right side
    71,856,806x = 3,893,289,848,398,428.50
  5. Step 5: Solve for x
    x = 3,893,289,848,398,428.50/71,856,806
  6. Step 6: Final answer
    x = 54,181,226.04

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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.