Home / 78,904.53-108,884.25-43,087.68

Finding the Fourth Proportional to 78,904.53, 108,884.25 and 43,087.68

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Solution

The fourth proportional to 78,904.53, 108,884.25 and 43,087.68 is: 59,458.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,904.53 : 108,884.25 = 43,087.68 : x
  2. Step 2: Convert to fraction form
    78,904.53/108,884.25 = 43,087.68/x
  3. Step 3: Cross multiply
    78,904.53x = 108,884.25 × 43,087.68
  4. Step 4: Simplify right side
    78,904.53x = 4,691,569,721.04
  5. Step 5: Solve for x
    x = 4,691,569,721.04/78,904.53
  6. Step 6: Final answer
    x = 59,458.81

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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.