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Finding the Fourth Proportional to 66,077.20, 99,128.60 and 33,245.20

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Solution

The fourth proportional to 66,077.20, 99,128.60 and 33,245.20 is: 49,874.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,077.20 : 99,128.60 = 33,245.20 : x
  2. Step 2: Convert to fraction form
    66,077.20/99,128.60 = 33,245.20/x
  3. Step 3: Cross multiply
    66,077.20x = 99,128.60 × 33,245.20
  4. Step 4: Simplify right side
    66,077.20x = 3,295,550,132.72
  5. Step 5: Solve for x
    x = 3,295,550,132.72/66,077.20
  6. Step 6: Final answer
    x = 49,874.24

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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.