Finding the Fourth Proportional to 53,310,072.42, 79,965,108.60 and 12,920,556.42
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Solution
The fourth proportional to 53,310,072.42, 79,965,108.60 and 12,920,556.42 is: 19,380,834.62
Step by Step Solution
- Step 1: Write the proportion equation
53,310,072.42 : 79,965,108.60 = 12,920,556.42 : x - Step 2: Convert to fraction form
53,310,072.42/79,965,108.60 = 12,920,556.42/x - Step 3: Cross multiply
53,310,072.42x = 79,965,108.60 × 12,920,556.42 - Step 4: Simplify right side
53,310,072.42x = 1,033,193,697,297,727.12 - Step 5: Solve for x
x = 1,033,193,697,297,727.12/53,310,072.42 - Step 6: Final answer
x = 19,380,834.62
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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.