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Finding the Fourth Proportional to 66,635.73, 91,959.44 and 36,420.39

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Solution

The fourth proportional to 66,635.73, 91,959.44 and 36,420.39 is: 50,261.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,635.73 : 91,959.44 = 36,420.39 : x
  2. Step 2: Convert to fraction form
    66,635.73/91,959.44 = 36,420.39/x
  3. Step 3: Cross multiply
    66,635.73x = 91,959.44 × 36,420.39
  4. Step 4: Simplify right side
    66,635.73x = 3,349,198,486.88
  5. Step 5: Solve for x
    x = 3,349,198,486.88/66,635.73
  6. Step 6: Final answer
    x = 50,261.30

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1.5x scale

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.