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Finding the Fourth Proportional to 101,680.70, 140,327.77 and 56,372.90

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Solution

The fourth proportional to 101,680.70, 140,327.77 and 56,372.90 is: 77,799.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,680.70 : 140,327.77 = 56,372.90 : x
  2. Step 2: Convert to fraction form
    101,680.70/140,327.77 = 56,372.90/x
  3. Step 3: Cross multiply
    101,680.70x = 140,327.77 × 56,372.90
  4. Step 4: Simplify right side
    101,680.70x = 7,910,683,345.43
  5. Step 5: Solve for x
    x = 7,910,683,345.43/101,680.70
  6. Step 6: Final answer
    x = 77,799.26

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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.