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Finding the Fourth Proportional to 66,950.40, 100,423.02 and 20,202

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Solution

The fourth proportional to 66,950.40, 100,423.02 and 20,202 is: 30,302.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,950.40 : 100,423.02 = 20,202 : x
  2. Step 2: Convert to fraction form
    66,950.40/100,423.02 = 20,202/x
  3. Step 3: Cross multiply
    66,950.40x = 100,423.02 × 20,202
  4. Step 4: Simplify right side
    66,950.40x = 2,028,745,850.04
  5. Step 5: Solve for x
    x = 2,028,745,850.04/66,950.40
  6. Step 6: Final answer
    x = 30,302.22

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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.