Home / 76,488.10-114,620.10-68,590.60

Finding the Fourth Proportional to 76,488.10, 114,620.10 and 68,590.60

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Solution

The fourth proportional to 76,488.10, 114,620.10 and 68,590.60 is: 102,785.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,488.10 : 114,620.10 = 68,590.60 : x
  2. Step 2: Convert to fraction form
    76,488.10/114,620.10 = 68,590.60/x
  3. Step 3: Cross multiply
    76,488.10x = 114,620.10 × 68,590.60
  4. Step 4: Simplify right side
    76,488.10x = 7,861,861,431.06
  5. Step 5: Solve for x
    x = 7,861,861,431.06/76,488.10
  6. Step 6: Final answer
    x = 102,785.42

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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.