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Finding the Fourth Proportional to 66,653.52, 91,977.48 and 38,354.64

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Solution

The fourth proportional to 66,653.52, 91,977.48 and 38,354.64 is: 52,926.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,653.52 : 91,977.48 = 38,354.64 : x
  2. Step 2: Convert to fraction form
    66,653.52/91,977.48 = 38,354.64/x
  3. Step 3: Cross multiply
    66,653.52x = 91,977.48 × 38,354.64
  4. Step 4: Simplify right side
    66,653.52x = 3,527,763,133.51
  5. Step 5: Solve for x
    x = 3,527,763,133.51/66,653.52
  6. Step 6: Final answer
    x = 52,926.88

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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.