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Finding the Fourth Proportional to 66,163.60, 99,245.40 and 41,280.40

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Solution

The fourth proportional to 66,163.60, 99,245.40 and 41,280.40 is: 61,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,163.60 : 99,245.40 = 41,280.40 : x
  2. Step 2: Convert to fraction form
    66,163.60/99,245.40 = 41,280.40/x
  3. Step 3: Cross multiply
    66,163.60x = 99,245.40 × 41,280.40
  4. Step 4: Simplify right side
    66,163.60x = 4,096,889,810.16
  5. Step 5: Solve for x
    x = 4,096,889,810.16/66,163.60
  6. Step 6: Final answer
    x = 61,920.60

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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.