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Finding the Fourth Proportional to 66,990.51, 100,476.18 and 22,611.42

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Solution

The fourth proportional to 66,990.51, 100,476.18 and 22,611.42 is: 33,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,990.51 : 100,476.18 = 22,611.42 : x
  2. Step 2: Convert to fraction form
    66,990.51/100,476.18 = 22,611.42/x
  3. Step 3: Cross multiply
    66,990.51x = 100,476.18 × 22,611.42
  4. Step 4: Simplify right side
    66,990.51x = 2,271,909,105.98
  5. Step 5: Solve for x
    x = 2,271,909,105.98/66,990.51
  6. Step 6: Final answer
    x = 33,913.89

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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.