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Finding the Fourth Proportional to 101,027.88, 139,391.13 and 57,419.82

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Solution

The fourth proportional to 101,027.88, 139,391.13 and 57,419.82 is: 79,223.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,027.88 : 139,391.13 = 57,419.82 : x
  2. Step 2: Convert to fraction form
    101,027.88/139,391.13 = 57,419.82/x
  3. Step 3: Cross multiply
    101,027.88x = 139,391.13 × 57,419.82
  4. Step 4: Simplify right side
    101,027.88x = 8,003,813,594.20
  5. Step 5: Solve for x
    x = 8,003,813,594.20/101,027.88
  6. Step 6: Final answer
    x = 79,223.81

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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.