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Finding the Fourth Proportional to 101,578.46, 140,143.77 and 58,556.57

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Solution

The fourth proportional to 101,578.46, 140,143.77 and 58,556.57 is: 80,788.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,578.46 : 140,143.77 = 58,556.57 : x
  2. Step 2: Convert to fraction form
    101,578.46/140,143.77 = 58,556.57/x
  3. Step 3: Cross multiply
    101,578.46x = 140,143.77 × 58,556.57
  4. Step 4: Simplify right side
    101,578.46x = 8,206,337,777.35
  5. Step 5: Solve for x
    x = 8,206,337,777.35/101,578.46
  6. Step 6: Final answer
    x = 80,788.17

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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.