Home / 81,103.14-111,836.36-55,646.71

Finding the Fourth Proportional to 81,103.14, 111,836.36 and 55,646.71

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Solution

The fourth proportional to 81,103.14, 111,836.36 and 55,646.71 is: 76,733.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,103.14 : 111,836.36 = 55,646.71 : x
  2. Step 2: Convert to fraction form
    81,103.14/111,836.36 = 55,646.71/x
  3. Step 3: Cross multiply
    81,103.14x = 111,836.36 × 55,646.71
  4. Step 4: Simplify right side
    81,103.14x = 6,223,325,351.90
  5. Step 5: Solve for x
    x = 6,223,325,351.90/81,103.14
  6. Step 6: Final answer
    x = 76,733.47

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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.