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Finding the Fourth Proportional to 72,740, 100,382.62 and 44,060.74

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Solution

The fourth proportional to 72,740, 100,382.62 and 44,060.74 is: 60,804.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740 : 100,382.62 = 44,060.74 : x
  2. Step 2: Convert to fraction form
    72,740/100,382.62 = 44,060.74/x
  3. Step 3: Cross multiply
    72,740x = 100,382.62 × 44,060.74
  4. Step 4: Simplify right side
    72,740x = 4,422,932,520.34
  5. Step 5: Solve for x
    x = 4,422,932,520.34/72,740
  6. Step 6: Final answer
    x = 60,804.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.