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Finding the Fourth Proportional to 66,808.53, 100,181.52 and 38,736.59

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Solution

The fourth proportional to 66,808.53, 100,181.52 and 38,736.59 is: 58,086.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,808.53 : 100,181.52 = 38,736.59 : x
  2. Step 2: Convert to fraction form
    66,808.53/100,181.52 = 38,736.59/x
  3. Step 3: Cross multiply
    66,808.53x = 100,181.52 × 38,736.59
  4. Step 4: Simplify right side
    66,808.53x = 3,880,689,964.91
  5. Step 5: Solve for x
    x = 3,880,689,964.91/66,808.53
  6. Step 6: Final answer
    x = 58,086.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.