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Finding the Fourth Proportional to 66,795.60, 100,148.94 and 40,081.44

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Solution

The fourth proportional to 66,795.60, 100,148.94 and 40,081.44 is: 60,095.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,795.60 : 100,148.94 = 40,081.44 : x
  2. Step 2: Convert to fraction form
    66,795.60/100,148.94 = 40,081.44/x
  3. Step 3: Cross multiply
    66,795.60x = 100,148.94 × 40,081.44
  4. Step 4: Simplify right side
    66,795.60x = 4,014,113,729.67
  5. Step 5: Solve for x
    x = 4,014,113,729.67/66,795.60
  6. Step 6: Final answer
    x = 60,095.48

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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.