Home / 86,078.14-118,785.45-47,836.71

Finding the Fourth Proportional to 86,078.14, 118,785.45 and 47,836.71

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Solution

The fourth proportional to 86,078.14, 118,785.45 and 47,836.71 is: 66,013.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,078.14 : 118,785.45 = 47,836.71 : x
  2. Step 2: Convert to fraction form
    86,078.14/118,785.45 = 47,836.71/x
  3. Step 3: Cross multiply
    86,078.14x = 118,785.45 × 47,836.71
  4. Step 4: Simplify right side
    86,078.14x = 5,682,305,123.87
  5. Step 5: Solve for x
    x = 5,682,305,123.87/86,078.14
  6. Step 6: Final answer
    x = 66,013.34

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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.