Home / 54,919.21-75,790.31-30,390.31

Finding the Fourth Proportional to 54,919.21, 75,790.31 and 30,390.31

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Solution

The fourth proportional to 54,919.21, 75,790.31 and 30,390.31 is: 41,939.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,919.21 : 75,790.31 = 30,390.31 : x
  2. Step 2: Convert to fraction form
    54,919.21/75,790.31 = 30,390.31/x
  3. Step 3: Cross multiply
    54,919.21x = 75,790.31 × 30,390.31
  4. Step 4: Simplify right side
    54,919.21x = 2,303,291,015.90
  5. Step 5: Solve for x
    x = 2,303,291,015.90/54,919.21
  6. Step 6: Final answer
    x = 41,939.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.