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Finding the Fourth Proportional to 68,080.61, 93,912.90 and 40,849.65

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Solution

The fourth proportional to 68,080.61, 93,912.90 and 40,849.65 is: 56,349.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,080.61 : 93,912.90 = 40,849.65 : x
  2. Step 2: Convert to fraction form
    68,080.61/93,912.90 = 40,849.65/x
  3. Step 3: Cross multiply
    68,080.61x = 93,912.90 × 40,849.65
  4. Step 4: Simplify right side
    68,080.61x = 3,836,309,294.47
  5. Step 5: Solve for x
    x = 3,836,309,294.47/68,080.61
  6. Step 6: Final answer
    x = 56,349.52

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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.