Home / 54,249.93-81,349.38-20,985.66

Finding the Fourth Proportional to 54,249.93, 81,349.38 and 20,985.66

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Solution

The fourth proportional to 54,249.93, 81,349.38 and 20,985.66 is: 31,468.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,249.93 : 81,349.38 = 20,985.66 : x
  2. Step 2: Convert to fraction form
    54,249.93/81,349.38 = 20,985.66/x
  3. Step 3: Cross multiply
    54,249.93x = 81,349.38 × 20,985.66
  4. Step 4: Simplify right side
    54,249.93x = 1,707,170,429.89
  5. Step 5: Solve for x
    x = 1,707,170,429.89/54,249.93
  6. Step 6: Final answer
    x = 31,468.62

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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.