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Finding the Fourth Proportional to 66,722.74, 100,079.79 and 25,168.66

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Solution

The fourth proportional to 66,722.74, 100,079.79 and 25,168.66 is: 37,751.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,722.74 : 100,079.79 = 25,168.66 : x
  2. Step 2: Convert to fraction form
    66,722.74/100,079.79 = 25,168.66/x
  3. Step 3: Cross multiply
    66,722.74x = 100,079.79 × 25,168.66
  4. Step 4: Simplify right side
    66,722.74x = 2,518,874,207.38
  5. Step 5: Solve for x
    x = 2,518,874,207.38/66,722.74
  6. Step 6: Final answer
    x = 37,751.36

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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.