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Finding the Fourth Proportional to 68,783.52, 103,175.30 and 45,404.48

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Solution

The fourth proportional to 68,783.52, 103,175.30 and 45,404.48 is: 68,106.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,783.52 : 103,175.30 = 45,404.48 : x
  2. Step 2: Convert to fraction form
    68,783.52/103,175.30 = 45,404.48/x
  3. Step 3: Cross multiply
    68,783.52x = 103,175.30 × 45,404.48
  4. Step 4: Simplify right side
    68,783.52x = 4,684,620,845.34
  5. Step 5: Solve for x
    x = 4,684,620,845.34/68,783.52
  6. Step 6: Final answer
    x = 68,106.73

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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.