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Finding the Fourth Proportional to 69,403.38, 104,104.78 and 16,812.78

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Solution

The fourth proportional to 69,403.38, 104,104.78 and 16,812.78 is: 25,219.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,403.38 : 104,104.78 = 16,812.78 : x
  2. Step 2: Convert to fraction form
    69,403.38/104,104.78 = 16,812.78/x
  3. Step 3: Cross multiply
    69,403.38x = 104,104.78 × 16,812.78
  4. Step 4: Simplify right side
    69,403.38x = 1,750,290,763.09
  5. Step 5: Solve for x
    x = 1,750,290,763.09/69,403.38
  6. Step 6: Final answer
    x = 25,219.10

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1.5x scale

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.