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Finding the Fourth Proportional to 66,794.60, 100,157.88 and 20,041.40

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Solution

The fourth proportional to 66,794.60, 100,157.88 and 20,041.40 is: 30,051.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,794.60 : 100,157.88 = 20,041.40 : x
  2. Step 2: Convert to fraction form
    66,794.60/100,157.88 = 20,041.40/x
  3. Step 3: Cross multiply
    66,794.60x = 100,157.88 × 20,041.40
  4. Step 4: Simplify right side
    66,794.60x = 2,007,304,136.23
  5. Step 5: Solve for x
    x = 2,007,304,136.23/66,794.60
  6. Step 6: Final answer
    x = 30,051.89

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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.