Home / 82,629.12-123,255.52-74,656.64

Finding the Fourth Proportional to 82,629.12, 123,255.52 and 74,656.64

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Solution

The fourth proportional to 82,629.12, 123,255.52 and 74,656.64 is: 111,363.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,629.12 : 123,255.52 = 74,656.64 : x
  2. Step 2: Convert to fraction form
    82,629.12/123,255.52 = 74,656.64/x
  3. Step 3: Cross multiply
    82,629.12x = 123,255.52 × 74,656.64
  4. Step 4: Simplify right side
    82,629.12x = 9,201,842,984.65
  5. Step 5: Solve for x
    x = 9,201,842,984.65/82,629.12
  6. Step 6: Final answer
    x = 111,363.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.