Home / 66,515.20-99,777.60-40,163.20

Finding the Fourth Proportional to 66,515.20, 99,777.60 and 40,163.20

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Solution

The fourth proportional to 66,515.20, 99,777.60 and 40,163.20 is: 60,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,515.20 : 99,777.60 = 40,163.20 : x
  2. Step 2: Convert to fraction form
    66,515.20/99,777.60 = 40,163.20/x
  3. Step 3: Cross multiply
    66,515.20x = 99,777.60 × 40,163.20
  4. Step 4: Simplify right side
    66,515.20x = 4,007,387,704.32
  5. Step 5: Solve for x
    x = 4,007,387,704.32/66,515.20
  6. Step 6: Final answer
    x = 60,247.70

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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.