Finding the Fourth Proportional to 73,778,540.80, 110,667,811.20 and 72,770,771.20
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Solution
The fourth proportional to 73,778,540.80, 110,667,811.20 and 72,770,771.20 is: 109,156,156.80
Step by Step Solution
- Step 1: Write the proportion equation
73,778,540.80 : 110,667,811.20 = 72,770,771.20 : x - Step 2: Convert to fraction form
73,778,540.80/110,667,811.20 = 72,770,771.20/x - Step 3: Cross multiply
73,778,540.80x = 110,667,811.20 × 72,770,771.20 - Step 4: Simplify right side
73,778,540.80x = 8,053,381,968,039,998 - Step 5: Solve for x
x = 8,053,381,968,039,998/73,778,540.80 - Step 6: Final answer
x = 109,156,156.80
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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.