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Finding the Fourth Proportional to 40,619.80, 60,908.10 and 17,219.80

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Solution

The fourth proportional to 40,619.80, 60,908.10 and 17,219.80 is: 25,820.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,619.80 : 60,908.10 = 17,219.80 : x
  2. Step 2: Convert to fraction form
    40,619.80/60,908.10 = 17,219.80/x
  3. Step 3: Cross multiply
    40,619.80x = 60,908.10 × 17,219.80
  4. Step 4: Simplify right side
    40,619.80x = 1,048,825,300.38
  5. Step 5: Solve for x
    x = 1,048,825,300.38/40,619.80
  6. Step 6: Final answer
    x = 25,820.54

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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.