Home / 82,579.20-113,969.12-49,045.28

Finding the Fourth Proportional to 82,579.20, 113,969.12 and 49,045.28

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Solution

The fourth proportional to 82,579.20, 113,969.12 and 49,045.28 is: 67,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,579.20 : 113,969.12 = 49,045.28 : x
  2. Step 2: Convert to fraction form
    82,579.20/113,969.12 = 49,045.28/x
  3. Step 3: Cross multiply
    82,579.20x = 113,969.12 × 49,045.28
  4. Step 4: Simplify right side
    82,579.20x = 5,589,647,401.75
  5. Step 5: Solve for x
    x = 5,589,647,401.75/82,579.20
  6. Step 6: Final answer
    x = 67,688.32

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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.