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Finding the Fourth Proportional to 68,630.55, 102,963.57 and 40,191.51

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Solution

The fourth proportional to 68,630.55, 102,963.57 and 40,191.51 is: 60,297.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,630.55 : 102,963.57 = 40,191.51 : x
  2. Step 2: Convert to fraction form
    68,630.55/102,963.57 = 40,191.51/x
  3. Step 3: Cross multiply
    68,630.55x = 102,963.57 × 40,191.51
  4. Step 4: Simplify right side
    68,630.55x = 4,138,261,353.29
  5. Step 5: Solve for x
    x = 4,138,261,353.29/68,630.55
  6. Step 6: Final answer
    x = 60,297.66

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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.