Finding the Fourth Proportional to 72,593,863.20, 108,890,794.80 and 18,741,175.20
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Solution
The fourth proportional to 72,593,863.20, 108,890,794.80 and 18,741,175.20 is: 28,111,762.80
Step by Step Solution
- Step 1: Write the proportion equation
72,593,863.20 : 108,890,794.80 = 18,741,175.20 : x - Step 2: Convert to fraction form
72,593,863.20/108,890,794.80 = 18,741,175.20/x - Step 3: Cross multiply
72,593,863.20x = 108,890,794.80 × 18,741,175.20 - Step 4: Simplify right side
72,593,863.20x = 2,040,741,463,014,048.75 - Step 5: Solve for x
x = 2,040,741,463,014,048.75/72,593,863.20 - Step 6: Final answer
x = 28,111,762.80
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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.