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Finding the Fourth Proportional to 68,305.30, 102,348.60 and 43,300.60

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Solution

The fourth proportional to 68,305.30, 102,348.60 and 43,300.60 is: 64,881.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,305.30 : 102,348.60 = 43,300.60 : x
  2. Step 2: Convert to fraction form
    68,305.30/102,348.60 = 43,300.60/x
  3. Step 3: Cross multiply
    68,305.30x = 102,348.60 × 43,300.60
  4. Step 4: Simplify right side
    68,305.30x = 4,431,755,789.16
  5. Step 5: Solve for x
    x = 4,431,755,789.16/68,305.30
  6. Step 6: Final answer
    x = 64,881.58

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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.