Home / 54,355.10-81,431.85-30,911.90

Finding the Fourth Proportional to 54,355.10, 81,431.85 and 30,911.90

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Solution

The fourth proportional to 54,355.10, 81,431.85 and 30,911.90 is: 46,310.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,355.10 : 81,431.85 = 30,911.90 : x
  2. Step 2: Convert to fraction form
    54,355.10/81,431.85 = 30,911.90/x
  3. Step 3: Cross multiply
    54,355.10x = 81,431.85 × 30,911.90
  4. Step 4: Simplify right side
    54,355.10x = 2,517,213,204.02
  5. Step 5: Solve for x
    x = 2,517,213,204.02/54,355.10
  6. Step 6: Final answer
    x = 46,310.52

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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.