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Finding the Fourth Proportional to 66,201.52, 91,359.84 and 35,988.88

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Solution

The fourth proportional to 66,201.52, 91,359.84 and 35,988.88 is: 49,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,201.52 : 91,359.84 = 35,988.88 : x
  2. Step 2: Convert to fraction form
    66,201.52/91,359.84 = 35,988.88/x
  3. Step 3: Cross multiply
    66,201.52x = 91,359.84 × 35,988.88
  4. Step 4: Simplify right side
    66,201.52x = 3,287,938,318.58
  5. Step 5: Solve for x
    x = 3,287,938,318.58/66,201.52
  6. Step 6: Final answer
    x = 49,665.60

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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.