Home / 101,005.85-139,388.97-55,685.42

Finding the Fourth Proportional to 101,005.85, 139,388.97 and 55,685.42

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Solution

The fourth proportional to 101,005.85, 139,388.97 and 55,685.42 is: 76,846.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,005.85 : 139,388.97 = 55,685.42 : x
  2. Step 2: Convert to fraction form
    101,005.85/139,388.97 = 55,685.42/x
  3. Step 3: Cross multiply
    101,005.85x = 139,388.97 × 55,685.42
  4. Step 4: Simplify right side
    101,005.85x = 7,761,932,640.87
  5. Step 5: Solve for x
    x = 7,761,932,640.87/101,005.85
  6. Step 6: Final answer
    x = 76,846.37

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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.