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Finding the Fourth Proportional to 68,976.76, 103,378.56 and 29,487.46

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Solution

The fourth proportional to 68,976.76, 103,378.56 and 29,487.46 is: 44,194.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,976.76 : 103,378.56 = 29,487.46 : x
  2. Step 2: Convert to fraction form
    68,976.76/103,378.56 = 29,487.46/x
  3. Step 3: Cross multiply
    68,976.76x = 103,378.56 × 29,487.46
  4. Step 4: Simplify right side
    68,976.76x = 3,048,371,152.86
  5. Step 5: Solve for x
    x = 3,048,371,152.86/68,976.76
  6. Step 6: Final answer
    x = 44,194.18

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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.