Home / 78,720.14-108,629.68-44,723.90

Finding the Fourth Proportional to 78,720.14, 108,629.68 and 44,723.90

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Solution

The fourth proportional to 78,720.14, 108,629.68 and 44,723.90 is: 61,716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,720.14 : 108,629.68 = 44,723.90 : x
  2. Step 2: Convert to fraction form
    78,720.14/108,629.68 = 44,723.90/x
  3. Step 3: Cross multiply
    78,720.14x = 108,629.68 × 44,723.90
  4. Step 4: Simplify right side
    78,720.14x = 4,858,343,188.97
  5. Step 5: Solve for x
    x = 4,858,343,188.97/78,720.14
  6. Step 6: Final answer
    x = 61,716.65

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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.