Home / 54,147.86-81,235.62-20,858.99

Finding the Fourth Proportional to 54,147.86, 81,235.62 and 20,858.99

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Solution

The fourth proportional to 54,147.86, 81,235.62 and 20,858.99 is: 31,293.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,147.86 : 81,235.62 = 20,858.99 : x
  2. Step 2: Convert to fraction form
    54,147.86/81,235.62 = 20,858.99/x
  3. Step 3: Cross multiply
    54,147.86x = 81,235.62 × 20,858.99
  4. Step 4: Simplify right side
    54,147.86x = 1,694,493,188.31
  5. Step 5: Solve for x
    x = 1,694,493,188.31/54,147.86
  6. Step 6: Final answer
    x = 31,293.82

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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.