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Finding the Fourth Proportional to 66,322.56, 91,524.36 and 39,464.64

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Solution

The fourth proportional to 66,322.56, 91,524.36 and 39,464.64 is: 54,460.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,322.56 : 91,524.36 = 39,464.64 : x
  2. Step 2: Convert to fraction form
    66,322.56/91,524.36 = 39,464.64/x
  3. Step 3: Cross multiply
    66,322.56x = 91,524.36 × 39,464.64
  4. Step 4: Simplify right side
    66,322.56x = 3,611,975,918.63
  5. Step 5: Solve for x
    x = 3,611,975,918.63/66,322.56
  6. Step 6: Final answer
    x = 54,460.74

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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.