Home / 85,142.78-117,497.07-49,353.56

Finding the Fourth Proportional to 85,142.78, 117,497.07 and 49,353.56

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Solution

The fourth proportional to 85,142.78, 117,497.07 and 49,353.56 is: 68,107.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,142.78 : 117,497.07 = 49,353.56 : x
  2. Step 2: Convert to fraction form
    85,142.78/117,497.07 = 49,353.56/x
  3. Step 3: Cross multiply
    85,142.78x = 117,497.07 × 49,353.56
  4. Step 4: Simplify right side
    85,142.78x = 5,798,898,694.07
  5. Step 5: Solve for x
    x = 5,798,898,694.07/85,142.78
  6. Step 6: Final answer
    x = 68,107.93

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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.