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Finding the Fourth Proportional to 101,673, 140,310.36 and 56,961

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Solution

The fourth proportional to 101,673, 140,310.36 and 56,961 is: 78,607.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,673 : 140,310.36 = 56,961 : x
  2. Step 2: Convert to fraction form
    101,673/140,310.36 = 56,961/x
  3. Step 3: Cross multiply
    101,673x = 140,310.36 × 56,961
  4. Step 4: Simplify right side
    101,673x = 7,992,218,415.96
  5. Step 5: Solve for x
    x = 7,992,218,415.96/101,673
  6. Step 6: Final answer
    x = 78,607.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.