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Finding the Fourth Proportional to 66,539.88, 91,825.38 and 36,731.88

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Solution

The fourth proportional to 66,539.88, 91,825.38 and 36,731.88 is: 50,690.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,539.88 : 91,825.38 = 36,731.88 : x
  2. Step 2: Convert to fraction form
    66,539.88/91,825.38 = 36,731.88/x
  3. Step 3: Cross multiply
    66,539.88x = 91,825.38 × 36,731.88
  4. Step 4: Simplify right side
    66,539.88x = 3,372,918,839.11
  5. Step 5: Solve for x
    x = 3,372,918,839.11/66,539.88
  6. Step 6: Final answer
    x = 50,690.19

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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.