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Finding the Fourth Proportional to 67,000.34, 100,515.10 and 20,252

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Solution

The fourth proportional to 67,000.34, 100,515.10 and 20,252 is: 30,382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,000.34 : 100,515.10 = 20,252 : x
  2. Step 2: Convert to fraction form
    67,000.34/100,515.10 = 20,252/x
  3. Step 3: Cross multiply
    67,000.34x = 100,515.10 × 20,252
  4. Step 4: Simplify right side
    67,000.34x = 2,035,631,805.20
  5. Step 5: Solve for x
    x = 2,035,631,805.20/67,000.34
  6. Step 6: Final answer
    x = 30,382.41

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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.