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Finding the Fourth Proportional to 68,761.56, 103,238.16 and 35,505.63

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Solution

The fourth proportional to 68,761.56, 103,238.16 and 35,505.63 is: 53,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,761.56 : 103,238.16 = 35,505.63 : x
  2. Step 2: Convert to fraction form
    68,761.56/103,238.16 = 35,505.63/x
  3. Step 3: Cross multiply
    68,761.56x = 103,238.16 × 35,505.63
  4. Step 4: Simplify right side
    68,761.56x = 3,665,535,910.84
  5. Step 5: Solve for x
    x = 3,665,535,910.84/68,761.56
  6. Step 6: Final answer
    x = 53,307.92

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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.