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Finding the Fourth Proportional to 66,124.56, 91,251.60 and 35,909.64

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Solution

The fourth proportional to 66,124.56, 91,251.60 and 35,909.64 is: 49,555.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,124.56 : 91,251.60 = 35,909.64 : x
  2. Step 2: Convert to fraction form
    66,124.56/91,251.60 = 35,909.64/x
  3. Step 3: Cross multiply
    66,124.56x = 91,251.60 × 35,909.64
  4. Step 4: Simplify right side
    66,124.56x = 3,276,812,105.42
  5. Step 5: Solve for x
    x = 3,276,812,105.42/66,124.56
  6. Step 6: Final answer
    x = 49,555.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.