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Finding the Fourth Proportional to 54,607.86, 81,911.73 and 17,171.21

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Solution

The fourth proportional to 54,607.86, 81,911.73 and 17,171.21 is: 25,756.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,607.86 : 81,911.73 = 17,171.21 : x
  2. Step 2: Convert to fraction form
    54,607.86/81,911.73 = 17,171.21/x
  3. Step 3: Cross multiply
    54,607.86x = 81,911.73 × 17,171.21
  4. Step 4: Simplify right side
    54,607.86x = 1,406,523,517.29
  5. Step 5: Solve for x
    x = 1,406,523,517.29/54,607.86
  6. Step 6: Final answer
    x = 25,756.80

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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.