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Finding the Fourth Proportional to 71,310.78, 106,651.79 and 63,464.92

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Solution

The fourth proportional to 71,310.78, 106,651.79 and 63,464.92 is: 94,917.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,310.78 : 106,651.79 = 63,464.92 : x
  2. Step 2: Convert to fraction form
    71,310.78/106,651.79 = 63,464.92/x
  3. Step 3: Cross multiply
    71,310.78x = 106,651.79 × 63,464.92
  4. Step 4: Simplify right side
    71,310.78x = 6,768,646,974.25
  5. Step 5: Solve for x
    x = 6,768,646,974.25/71,310.78
  6. Step 6: Final answer
    x = 94,917.58

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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.