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Finding the Fourth Proportional to 69,273, 103,926.78 and 20,025

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Solution

The fourth proportional to 69,273, 103,926.78 and 20,025 is: 30,042.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,273 : 103,926.78 = 20,025 : x
  2. Step 2: Convert to fraction form
    69,273/103,926.78 = 20,025/x
  3. Step 3: Cross multiply
    69,273x = 103,926.78 × 20,025
  4. Step 4: Simplify right side
    69,273x = 2,081,133,769.50
  5. Step 5: Solve for x
    x = 2,081,133,769.50/69,273
  6. Step 6: Final answer
    x = 30,042.50

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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.