Home / 54,186.45-81,293.85-20,907.60

Finding the Fourth Proportional to 54,186.45, 81,293.85 and 20,907.60

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Solution

The fourth proportional to 54,186.45, 81,293.85 and 20,907.60 is: 31,366.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,186.45 : 81,293.85 = 20,907.60 : x
  2. Step 2: Convert to fraction form
    54,186.45/81,293.85 = 20,907.60/x
  3. Step 3: Cross multiply
    54,186.45x = 81,293.85 × 20,907.60
  4. Step 4: Simplify right side
    54,186.45x = 1,699,659,298.26
  5. Step 5: Solve for x
    x = 1,699,659,298.26/54,186.45
  6. Step 6: Final answer
    x = 31,366.87

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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.