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Finding the Fourth Proportional to 66,848.26, 100,272.39 and 31,768.78

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Solution

The fourth proportional to 66,848.26, 100,272.39 and 31,768.78 is: 47,653.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,848.26 : 100,272.39 = 31,768.78 : x
  2. Step 2: Convert to fraction form
    66,848.26/100,272.39 = 31,768.78/x
  3. Step 3: Cross multiply
    66,848.26x = 100,272.39 × 31,768.78
  4. Step 4: Simplify right side
    66,848.26x = 3,185,531,497.98
  5. Step 5: Solve for x
    x = 3,185,531,497.98/66,848.26
  6. Step 6: Final answer
    x = 47,653.17

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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.