Home / 81,178.13-111,986.73-50,948.52

Finding the Fourth Proportional to 81,178.13, 111,986.73 and 50,948.52

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Solution

The fourth proportional to 81,178.13, 111,986.73 and 50,948.52 is: 70,284.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,178.13 : 111,986.73 = 50,948.52 : x
  2. Step 2: Convert to fraction form
    81,178.13/111,986.73 = 50,948.52/x
  3. Step 3: Cross multiply
    81,178.13x = 111,986.73 × 50,948.52
  4. Step 4: Simplify right side
    81,178.13x = 5,705,558,153.14
  5. Step 5: Solve for x
    x = 5,705,558,153.14/81,178.13
  6. Step 6: Final answer
    x = 70,284.43

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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.