Home / 75,121.64-103,667.96-43,289.72

Finding the Fourth Proportional to 75,121.64, 103,667.96 and 43,289.72

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Solution

The fourth proportional to 75,121.64, 103,667.96 and 43,289.72 is: 59,739.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,121.64 : 103,667.96 = 43,289.72 : x
  2. Step 2: Convert to fraction form
    75,121.64/103,667.96 = 43,289.72/x
  3. Step 3: Cross multiply
    75,121.64x = 103,667.96 × 43,289.72
  4. Step 4: Simplify right side
    75,121.64x = 4,487,756,961.37
  5. Step 5: Solve for x
    x = 4,487,756,961.37/75,121.64
  6. Step 6: Final answer
    x = 59,739.87

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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.