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Finding the Fourth Proportional to 66,016, 91,106.88 and 37,721.08

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Solution

The fourth proportional to 66,016, 91,106.88 and 37,721.08 is: 52,057.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,016 : 91,106.88 = 37,721.08 : x
  2. Step 2: Convert to fraction form
    66,016/91,106.88 = 37,721.08/x
  3. Step 3: Cross multiply
    66,016x = 91,106.88 × 37,721.08
  4. Step 4: Simplify right side
    66,016x = 3,436,649,909.03
  5. Step 5: Solve for x
    x = 3,436,649,909.03/66,016
  6. Step 6: Final answer
    x = 52,057.83

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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.