Home / 66,556.80-99,705.60-40,183.20

Finding the Fourth Proportional to 66,556.80, 99,705.60 and 40,183.20

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Solution

The fourth proportional to 66,556.80, 99,705.60 and 40,183.20 is: 60,196.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,556.80 : 99,705.60 = 40,183.20 : x
  2. Step 2: Convert to fraction form
    66,556.80/99,705.60 = 40,183.20/x
  3. Step 3: Cross multiply
    66,556.80x = 99,705.60 × 40,183.20
  4. Step 4: Simplify right side
    66,556.80x = 4,006,490,065.92
  5. Step 5: Solve for x
    x = 4,006,490,065.92/66,556.80
  6. Step 6: Final answer
    x = 60,196.55

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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.