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Finding the Fourth Proportional to 71,856,805, 99,162,390.90 and 39,261,757

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Solution

The fourth proportional to 71,856,805, 99,162,390.90 and 39,261,757 is: 54,181,224.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,856,805 : 99,162,390.90 = 39,261,757 : x
  2. Step 2: Convert to fraction form
    71,856,805/99,162,390.90 = 39,261,757/x
  3. Step 3: Cross multiply
    71,856,805x = 99,162,390.90 × 39,261,757
  4. Step 4: Simplify right side
    71,856,805x = 3,893,289,695,054,811.50
  5. Step 5: Solve for x
    x = 3,893,289,695,054,811.50/71,856,805
  6. Step 6: Final answer
    x = 54,181,224.66

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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.