Home / 78,467.43-108,287.19-42,659.85

Finding the Fourth Proportional to 78,467.43, 108,287.19 and 42,659.85

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Solution

The fourth proportional to 78,467.43, 108,287.19 and 42,659.85 is: 58,871.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,467.43 : 108,287.19 = 42,659.85 : x
  2. Step 2: Convert to fraction form
    78,467.43/108,287.19 = 42,659.85/x
  3. Step 3: Cross multiply
    78,467.43x = 108,287.19 × 42,659.85
  4. Step 4: Simplify right side
    78,467.43x = 4,619,515,282.32
  5. Step 5: Solve for x
    x = 4,619,515,282.32/78,467.43
  6. Step 6: Final answer
    x = 58,871.75

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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.