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Finding the Fourth Proportional to 68,693.24, 103,039.14 and 18,773.30

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Solution

The fourth proportional to 68,693.24, 103,039.14 and 18,773.30 is: 28,159.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,693.24 : 103,039.14 = 18,773.30 : x
  2. Step 2: Convert to fraction form
    68,693.24/103,039.14 = 18,773.30/x
  3. Step 3: Cross multiply
    68,693.24x = 103,039.14 × 18,773.30
  4. Step 4: Simplify right side
    68,693.24x = 1,934,384,686.96
  5. Step 5: Solve for x
    x = 1,934,384,686.96/68,693.24
  6. Step 6: Final answer
    x = 28,159.75

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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.