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Finding the Fourth Proportional to 68,329.76, 102,508.47 and 28,886.81

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Solution

The fourth proportional to 68,329.76, 102,508.47 and 28,886.81 is: 43,336.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,329.76 : 102,508.47 = 28,886.81 : x
  2. Step 2: Convert to fraction form
    68,329.76/102,508.47 = 28,886.81/x
  3. Step 3: Cross multiply
    68,329.76x = 102,508.47 × 28,886.81
  4. Step 4: Simplify right side
    68,329.76x = 2,961,142,183.74
  5. Step 5: Solve for x
    x = 2,961,142,183.74/68,329.76
  6. Step 6: Final answer
    x = 43,336.06

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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.