Home / 66,375.60-99,563.40-54,711.60

Finding the Fourth Proportional to 66,375.60, 99,563.40 and 54,711.60

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Solution

The fourth proportional to 66,375.60, 99,563.40 and 54,711.60 is: 82,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,375.60 : 99,563.40 = 54,711.60 : x
  2. Step 2: Convert to fraction form
    66,375.60/99,563.40 = 54,711.60/x
  3. Step 3: Cross multiply
    66,375.60x = 99,563.40 × 54,711.60
  4. Step 4: Simplify right side
    66,375.60x = 5,447,272,915.44
  5. Step 5: Solve for x
    x = 5,447,272,915.44/66,375.60
  6. Step 6: Final answer
    x = 82,067.40

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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.