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Finding the Fourth Proportional to 66,979, 92,432.10 and 37,171

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Solution

The fourth proportional to 66,979, 92,432.10 and 37,171 is: 51,296.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,979 : 92,432.10 = 37,171 : x
  2. Step 2: Convert to fraction form
    66,979/92,432.10 = 37,171/x
  3. Step 3: Cross multiply
    66,979x = 92,432.10 × 37,171
  4. Step 4: Simplify right side
    66,979x = 3,435,793,589.10
  5. Step 5: Solve for x
    x = 3,435,793,589.10/66,979
  6. Step 6: Final answer
    x = 51,296.58

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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.