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Finding the Fourth Proportional to 68,372.60, 102,569.74 and 28,930

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Solution

The fourth proportional to 68,372.60, 102,569.74 and 28,930 is: 43,399.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,372.60 : 102,569.74 = 28,930 : x
  2. Step 2: Convert to fraction form
    68,372.60/102,569.74 = 28,930/x
  3. Step 3: Cross multiply
    68,372.60x = 102,569.74 × 28,930
  4. Step 4: Simplify right side
    68,372.60x = 2,967,342,578.20
  5. Step 5: Solve for x
    x = 2,967,342,578.20/68,372.60
  6. Step 6: Final answer
    x = 43,399.59

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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.