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Finding the Fourth Proportional to 66,568.64, 91,860.96 and 39,741.44

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Solution

The fourth proportional to 66,568.64, 91,860.96 and 39,741.44 is: 54,840.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,568.64 : 91,860.96 = 39,741.44 : x
  2. Step 2: Convert to fraction form
    66,568.64/91,860.96 = 39,741.44/x
  3. Step 3: Cross multiply
    66,568.64x = 91,860.96 × 39,741.44
  4. Step 4: Simplify right side
    66,568.64x = 3,650,686,830.18
  5. Step 5: Solve for x
    x = 3,650,686,830.18/66,568.64
  6. Step 6: Final answer
    x = 54,840.94

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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.