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Finding the Fourth Proportional to 66,722.49, 100,079.42 and 25,168.41

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Solution

The fourth proportional to 66,722.49, 100,079.42 and 25,168.41 is: 37,750.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,722.49 : 100,079.42 = 25,168.41 : x
  2. Step 2: Convert to fraction form
    66,722.49/100,079.42 = 25,168.41/x
  3. Step 3: Cross multiply
    66,722.49x = 100,079.42 × 25,168.41
  4. Step 4: Simplify right side
    66,722.49x = 2,518,839,749.28
  5. Step 5: Solve for x
    x = 2,518,839,749.28/66,722.49
  6. Step 6: Final answer
    x = 37,750.99

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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.