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Finding the Fourth Proportional to 65,979, 91,051.02 and 36,171

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Solution

The fourth proportional to 65,979, 91,051.02 and 36,171 is: 49,915.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,979 : 91,051.02 = 36,171 : x
  2. Step 2: Convert to fraction form
    65,979/91,051.02 = 36,171/x
  3. Step 3: Cross multiply
    65,979x = 91,051.02 × 36,171
  4. Step 4: Simplify right side
    65,979x = 3,293,406,444.42
  5. Step 5: Solve for x
    x = 3,293,406,444.42/65,979
  6. Step 6: Final answer
    x = 49,915.98

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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.