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Finding the Fourth Proportional to 66,129.44, 99,200.46 and 21,756.56

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Solution

The fourth proportional to 66,129.44, 99,200.46 and 21,756.56 is: 32,636.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,129.44 : 99,200.46 = 21,756.56 : x
  2. Step 2: Convert to fraction form
    66,129.44/99,200.46 = 21,756.56/x
  3. Step 3: Cross multiply
    66,129.44x = 99,200.46 × 21,756.56
  4. Step 4: Simplify right side
    66,129.44x = 2,158,260,760.02
  5. Step 5: Solve for x
    x = 2,158,260,760.02/66,129.44
  6. Step 6: Final answer
    x = 32,636.91

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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.