Home / 78,107.43-117,082.25-30,755.75

Finding the Fourth Proportional to 78,107.43, 117,082.25 and 30,755.75

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Solution

The fourth proportional to 78,107.43, 117,082.25 and 30,755.75 is: 46,102.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,107.43 : 117,082.25 = 30,755.75 : x
  2. Step 2: Convert to fraction form
    78,107.43/117,082.25 = 30,755.75/x
  3. Step 3: Cross multiply
    78,107.43x = 117,082.25 × 30,755.75
  4. Step 4: Simplify right side
    78,107.43x = 3,600,952,225.64
  5. Step 5: Solve for x
    x = 3,600,952,225.64/78,107.43
  6. Step 6: Final answer
    x = 46,102.56

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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.