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Finding the Fourth Proportional to 71,856,803, 99,162,388.14 and 39,261,755

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Solution

The fourth proportional to 71,856,803, 99,162,388.14 and 39,261,755 is: 54,181,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,856,803 : 99,162,388.14 = 39,261,755 : x
  2. Step 2: Convert to fraction form
    71,856,803/99,162,388.14 = 39,261,755/x
  3. Step 3: Cross multiply
    71,856,803x = 99,162,388.14 × 39,261,755
  4. Step 4: Simplify right side
    71,856,803x = 3,893,289,388,367,585.50
  5. Step 5: Solve for x
    x = 3,893,289,388,367,585.50/71,856,803
  6. Step 6: Final answer
    x = 54,181,221.90

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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.