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Finding the Fourth Proportional to 66,602.71, 91,911.82 and 36,388.54

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Solution

The fourth proportional to 66,602.71, 91,911.82 and 36,388.54 is: 50,216.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,602.71 : 91,911.82 = 36,388.54 : x
  2. Step 2: Convert to fraction form
    66,602.71/91,911.82 = 36,388.54/x
  3. Step 3: Cross multiply
    66,602.71x = 91,911.82 × 36,388.54
  4. Step 4: Simplify right side
    66,602.71x = 3,344,536,847.57
  5. Step 5: Solve for x
    x = 3,344,536,847.57/66,602.71
  6. Step 6: Final answer
    x = 50,216.23

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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.