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Finding the Fourth Proportional to 73,144.38, 100,939.62 and 40,879.53

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Solution

The fourth proportional to 73,144.38, 100,939.62 and 40,879.53 is: 56,413.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,144.38 : 100,939.62 = 40,879.53 : x
  2. Step 2: Convert to fraction form
    73,144.38/100,939.62 = 40,879.53/x
  3. Step 3: Cross multiply
    73,144.38x = 100,939.62 × 40,879.53
  4. Step 4: Simplify right side
    73,144.38x = 4,126,364,223.98
  5. Step 5: Solve for x
    x = 4,126,364,223.98/73,144.38
  6. Step 6: Final answer
    x = 56,413.96

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1.5x scale

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.