Home / 76,741.89-115,171.94-61,785.60

Finding the Fourth Proportional to 76,741.89, 115,171.94 and 61,785.60

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Solution

The fourth proportional to 76,741.89, 115,171.94 and 61,785.60 is: 92,725.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,741.89 : 115,171.94 = 61,785.60 : x
  2. Step 2: Convert to fraction form
    76,741.89/115,171.94 = 61,785.60/x
  3. Step 3: Cross multiply
    76,741.89x = 115,171.94 × 61,785.60
  4. Step 4: Simplify right side
    76,741.89x = 7,115,967,416.06
  5. Step 5: Solve for x
    x = 7,115,967,416.06/76,741.89
  6. Step 6: Final answer
    x = 92,725.99

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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.