Home / 81,629.78-112,640.45-45,823.73

Finding the Fourth Proportional to 81,629.78, 112,640.45 and 45,823.73

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Solution

The fourth proportional to 81,629.78, 112,640.45 and 45,823.73 is: 63,231.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,629.78 : 112,640.45 = 45,823.73 : x
  2. Step 2: Convert to fraction form
    81,629.78/112,640.45 = 45,823.73/x
  3. Step 3: Cross multiply
    81,629.78x = 112,640.45 × 45,823.73
  4. Step 4: Simplify right side
    81,629.78x = 5,161,605,567.88
  5. Step 5: Solve for x
    x = 5,161,605,567.88/81,629.78
  6. Step 6: Final answer
    x = 63,231.89

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1.5x scale

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.