Home / 82,579.60-123,856.36-68,629.28

Finding the Fourth Proportional to 82,579.60, 123,856.36 and 68,629.28

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Solution

The fourth proportional to 82,579.60, 123,856.36 and 68,629.28 is: 102,933.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,579.60 : 123,856.36 = 68,629.28 : x
  2. Step 2: Convert to fraction form
    82,579.60/123,856.36 = 68,629.28/x
  3. Step 3: Cross multiply
    82,579.60x = 123,856.36 × 68,629.28
  4. Step 4: Simplify right side
    82,579.60x = 8,500,172,810.22
  5. Step 5: Solve for x
    x = 8,500,172,810.22/82,579.60
  6. Step 6: Final answer
    x = 102,933.08

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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.