Home / 80,171.72-120,256.32-27,581.66

Finding the Fourth Proportional to 80,171.72, 120,256.32 and 27,581.66

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Solution

The fourth proportional to 80,171.72, 120,256.32 and 27,581.66 is: 41,372.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,171.72 : 120,256.32 = 27,581.66 : x
  2. Step 2: Convert to fraction form
    80,171.72/120,256.32 = 27,581.66/x
  3. Step 3: Cross multiply
    80,171.72x = 120,256.32 × 27,581.66
  4. Step 4: Simplify right side
    80,171.72x = 3,316,868,931.09
  5. Step 5: Solve for x
    x = 3,316,868,931.09/80,171.72
  6. Step 6: Final answer
    x = 41,372.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.