Home / 78,720.28-108,629.88-44,724.04

Finding the Fourth Proportional to 78,720.28, 108,629.88 and 44,724.04

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Solution

The fourth proportional to 78,720.28, 108,629.88 and 44,724.04 is: 61,716.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,720.28 : 108,629.88 = 44,724.04 : x
  2. Step 2: Convert to fraction form
    78,720.28/108,629.88 = 44,724.04/x
  3. Step 3: Cross multiply
    78,720.28x = 108,629.88 × 44,724.04
  4. Step 4: Simplify right side
    78,720.28x = 4,858,366,874.70
  5. Step 5: Solve for x
    x = 4,858,366,874.70/78,720.28
  6. Step 6: Final answer
    x = 61,716.84

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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.