Home / 78,829.33-108,786.78-43,021.64

Finding the Fourth Proportional to 78,829.33, 108,786.78 and 43,021.64

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Solution

The fourth proportional to 78,829.33, 108,786.78 and 43,021.64 is: 59,371.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,829.33 : 108,786.78 = 43,021.64 : x
  2. Step 2: Convert to fraction form
    78,829.33/108,786.78 = 43,021.64/x
  3. Step 3: Cross multiply
    78,829.33x = 108,786.78 × 43,021.64
  4. Step 4: Simplify right side
    78,829.33x = 4,680,185,685.92
  5. Step 5: Solve for x
    x = 4,680,185,685.92/78,829.33
  6. Step 6: Final answer
    x = 59,371.12

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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.