Home / 78,690.96-118,016.60-22,531.43

Finding the Fourth Proportional to 78,690.96, 118,016.60 and 22,531.43

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Solution

The fourth proportional to 78,690.96, 118,016.60 and 22,531.43 is: 33,791.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,690.96 : 118,016.60 = 22,531.43 : x
  2. Step 2: Convert to fraction form
    78,690.96/118,016.60 = 22,531.43/x
  3. Step 3: Cross multiply
    78,690.96x = 118,016.60 × 22,531.43
  4. Step 4: Simplify right side
    78,690.96x = 2,659,082,944.12
  5. Step 5: Solve for x
    x = 2,659,082,944.12/78,690.96
  6. Step 6: Final answer
    x = 33,791.47

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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.