Home / 66,183.40-99,188.70-30,640.60

Finding the Fourth Proportional to 66,183.40, 99,188.70 and 30,640.60

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Solution

The fourth proportional to 66,183.40, 99,188.70 and 30,640.60 is: 45,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,183.40 : 99,188.70 = 30,640.60 : x
  2. Step 2: Convert to fraction form
    66,183.40/99,188.70 = 30,640.60/x
  3. Step 3: Cross multiply
    66,183.40x = 99,188.70 × 30,640.60
  4. Step 4: Simplify right side
    66,183.40x = 3,039,201,281.22
  5. Step 5: Solve for x
    x = 3,039,201,281.22/66,183.40
  6. Step 6: Final answer
    x = 45,920.90

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1.5x scale

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.