Home / 85,173.78-127,629.24-53,943.42

Finding the Fourth Proportional to 85,173.78, 127,629.24 and 53,943.42

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Solution

The fourth proportional to 85,173.78, 127,629.24 and 53,943.42 is: 80,831.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,173.78 : 127,629.24 = 53,943.42 : x
  2. Step 2: Convert to fraction form
    85,173.78/127,629.24 = 53,943.42/x
  3. Step 3: Cross multiply
    85,173.78x = 127,629.24 × 53,943.42
  4. Step 4: Simplify right side
    85,173.78x = 6,884,757,697.60
  5. Step 5: Solve for x
    x = 6,884,757,697.60/85,173.78
  6. Step 6: Final answer
    x = 80,831.89

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1.5x scale

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.