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Finding the Fourth Proportional to 68,801.93, 103,103.30 and 47,432.72

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Solution

The fourth proportional to 68,801.93, 103,103.30 and 47,432.72 is: 71,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,801.93 : 103,103.30 = 47,432.72 : x
  2. Step 2: Convert to fraction form
    68,801.93/103,103.30 = 47,432.72/x
  3. Step 3: Cross multiply
    68,801.93x = 103,103.30 × 47,432.72
  4. Step 4: Simplify right side
    68,801.93x = 4,890,469,207.30
  5. Step 5: Solve for x
    x = 4,890,469,207.30/68,801.93
  6. Step 6: Final answer
    x = 71,080.40

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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.