Home / 54,375.12-81,431.32-30,930.48

Finding the Fourth Proportional to 54,375.12, 81,431.32 and 30,930.48

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Solution

The fourth proportional to 54,375.12, 81,431.32 and 30,930.48 is: 46,321.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,375.12 : 81,431.32 = 30,930.48 : x
  2. Step 2: Convert to fraction form
    54,375.12/81,431.32 = 30,930.48/x
  3. Step 3: Cross multiply
    54,375.12x = 81,431.32 × 30,930.48
  4. Step 4: Simplify right side
    54,375.12x = 2,518,709,814.63
  5. Step 5: Solve for x
    x = 2,518,709,814.63/54,375.12
  6. Step 6: Final answer
    x = 46,321.00

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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.