Home / 54,170.53-81,168.32-20,851.59

Finding the Fourth Proportional to 54,170.53, 81,168.32 and 20,851.59

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Solution

The fourth proportional to 54,170.53, 81,168.32 and 20,851.59 is: 31,243.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,170.53 : 81,168.32 = 20,851.59 : x
  2. Step 2: Convert to fraction form
    54,170.53/81,168.32 = 20,851.59/x
  3. Step 3: Cross multiply
    54,170.53x = 81,168.32 × 20,851.59
  4. Step 4: Simplify right side
    54,170.53x = 1,692,488,019.53
  5. Step 5: Solve for x
    x = 1,692,488,019.53/54,170.53
  6. Step 6: Final answer
    x = 31,243.70

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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.