Home / 76,678.20-115,036.38-60,942.60

Finding the Fourth Proportional to 76,678.20, 115,036.38 and 60,942.60

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Solution

The fourth proportional to 76,678.20, 115,036.38 and 60,942.60 is: 91,429.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,678.20 : 115,036.38 = 60,942.60 : x
  2. Step 2: Convert to fraction form
    76,678.20/115,036.38 = 60,942.60/x
  3. Step 3: Cross multiply
    76,678.20x = 115,036.38 × 60,942.60
  4. Step 4: Simplify right side
    76,678.20x = 7,010,616,091.79
  5. Step 5: Solve for x
    x = 7,010,616,091.79/76,678.20
  6. Step 6: Final answer
    x = 91,429.06

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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.