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Finding the Fourth Proportional to 68,755.80, 103,144.38 and 29,313

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Solution

The fourth proportional to 68,755.80, 103,144.38 and 29,313 is: 43,974.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,755.80 : 103,144.38 = 29,313 : x
  2. Step 2: Convert to fraction form
    68,755.80/103,144.38 = 29,313/x
  3. Step 3: Cross multiply
    68,755.80x = 103,144.38 × 29,313
  4. Step 4: Simplify right side
    68,755.80x = 3,023,471,210.94
  5. Step 5: Solve for x
    x = 3,023,471,210.94/68,755.80
  6. Step 6: Final answer
    x = 43,974.05

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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.