Home / 69,612.40-104,418.60-40,121.20

Finding the Fourth Proportional to 69,612.40, 104,418.60 and 40,121.20

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Solution

The fourth proportional to 69,612.40, 104,418.60 and 40,121.20 is: 60,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,612.40 : 104,418.60 = 40,121.20 : x
  2. Step 2: Convert to fraction form
    69,612.40/104,418.60 = 40,121.20/x
  3. Step 3: Cross multiply
    69,612.40x = 104,418.60 × 40,121.20
  4. Step 4: Simplify right side
    69,612.40x = 4,189,399,534.32
  5. Step 5: Solve for x
    x = 4,189,399,534.32/69,612.40
  6. Step 6: Final answer
    x = 60,181.80

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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.