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Finding the Fourth Proportional to 66,727, 92,099.66 and 38,449.09

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Solution

The fourth proportional to 66,727, 92,099.66 and 38,449.09 is: 53,069.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,727 : 92,099.66 = 38,449.09 : x
  2. Step 2: Convert to fraction form
    66,727/92,099.66 = 38,449.09/x
  3. Step 3: Cross multiply
    66,727x = 92,099.66 × 38,449.09
  4. Step 4: Simplify right side
    66,727x = 3,541,148,116.31
  5. Step 5: Solve for x
    x = 3,541,148,116.31/66,727
  6. Step 6: Final answer
    x = 53,069.19

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1.5x scale

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.