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Finding the Fourth Proportional to 101,669.87, 140,305.41 and 56,348.85

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Solution

The fourth proportional to 101,669.87, 140,305.41 and 56,348.85 is: 77,761.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,669.87 : 140,305.41 = 56,348.85 : x
  2. Step 2: Convert to fraction form
    101,669.87/140,305.41 = 56,348.85/x
  3. Step 3: Cross multiply
    101,669.87x = 140,305.41 × 56,348.85
  4. Step 4: Simplify right side
    101,669.87x = 7,906,048,502.28
  5. Step 5: Solve for x
    x = 7,906,048,502.28/101,669.87
  6. Step 6: Final answer
    x = 77,761.97

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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.