Home / 78,268.01-117,377.37-25,665.21

Finding the Fourth Proportional to 78,268.01, 117,377.37 and 25,665.21

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Solution

The fourth proportional to 78,268.01, 117,377.37 and 25,665.21 is: 38,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,268.01 : 117,377.37 = 25,665.21 : x
  2. Step 2: Convert to fraction form
    78,268.01/117,377.37 = 25,665.21/x
  3. Step 3: Cross multiply
    78,268.01x = 117,377.37 × 25,665.21
  4. Step 4: Simplify right side
    78,268.01x = 3,012,514,850.30
  5. Step 5: Solve for x
    x = 3,012,514,850.30/78,268.01
  6. Step 6: Final answer
    x = 38,489.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.