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Finding the Fourth Proportional to 101,469.48, 140,028.05 and 56,149.37

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Solution

The fourth proportional to 101,469.48, 140,028.05 and 56,149.37 is: 77,486.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,469.48 : 140,028.05 = 56,149.37 : x
  2. Step 2: Convert to fraction form
    101,469.48/140,028.05 = 56,149.37/x
  3. Step 3: Cross multiply
    101,469.48x = 140,028.05 × 56,149.37
  4. Step 4: Simplify right side
    101,469.48x = 7,862,486,789.83
  5. Step 5: Solve for x
    x = 7,862,486,789.83/101,469.48
  6. Step 6: Final answer
    x = 77,486.22

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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.