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Finding the Fourth Proportional to 67,026.88, 100,545.16 and 20,283.44

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Solution

The fourth proportional to 67,026.88, 100,545.16 and 20,283.44 is: 30,426.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,026.88 : 100,545.16 = 20,283.44 : x
  2. Step 2: Convert to fraction form
    67,026.88/100,545.16 = 20,283.44/x
  3. Step 3: Cross multiply
    67,026.88x = 100,545.16 × 20,283.44
  4. Step 4: Simplify right side
    67,026.88x = 2,039,401,720.15
  5. Step 5: Solve for x
    x = 2,039,401,720.15/67,026.88
  6. Step 6: Final answer
    x = 30,426.62

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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.