Home / 66,699.20-99,879.46-40,028.40

Finding the Fourth Proportional to 66,699.20, 99,879.46 and 40,028.40

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Solution

The fourth proportional to 66,699.20, 99,879.46 and 40,028.40 is: 59,940.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,699.20 : 99,879.46 = 40,028.40 : x
  2. Step 2: Convert to fraction form
    66,699.20/99,879.46 = 40,028.40/x
  3. Step 3: Cross multiply
    66,699.20x = 99,879.46 × 40,028.40
  4. Step 4: Simplify right side
    66,699.20x = 3,998,014,976.66
  5. Step 5: Solve for x
    x = 3,998,014,976.66/66,699.20
  6. Step 6: Final answer
    x = 59,940.97

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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.