Home / 54,955.20-82,214.10-47,640.90

Finding the Fourth Proportional to 54,955.20, 82,214.10 and 47,640.90

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Solution

The fourth proportional to 54,955.20, 82,214.10 and 47,640.90 is: 71,271.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,955.20 : 82,214.10 = 47,640.90 : x
  2. Step 2: Convert to fraction form
    54,955.20/82,214.10 = 47,640.90/x
  3. Step 3: Cross multiply
    54,955.20x = 82,214.10 × 47,640.90
  4. Step 4: Simplify right side
    54,955.20x = 3,916,753,716.69
  5. Step 5: Solve for x
    x = 3,916,753,716.69/54,955.20
  6. Step 6: Final answer
    x = 71,271.76

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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.