Home / 101,043.55-139,438.26-55,725.72

Finding the Fourth Proportional to 101,043.55, 139,438.26 and 55,725.72

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Solution

The fourth proportional to 101,043.55, 139,438.26 and 55,725.72 is: 76,900.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,043.55 : 139,438.26 = 55,725.72 : x
  2. Step 2: Convert to fraction form
    101,043.55/139,438.26 = 55,725.72/x
  3. Step 3: Cross multiply
    101,043.55x = 139,438.26 × 55,725.72
  4. Step 4: Simplify right side
    101,043.55x = 7,770,297,695.49
  5. Step 5: Solve for x
    x = 7,770,297,695.49/101,043.55
  6. Step 6: Final answer
    x = 76,900.48

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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.