Finding the Fourth Proportional to 86,217.78, 129,358.26 and 36,310.44
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Solution
The fourth proportional to 86,217.78, 129,358.26 and 36,310.44 is: 54,478.96
Step by Step Solution
- Step 1: Write the proportion equation
86,217.78 : 129,358.26 = 36,310.44 : x - Step 2: Convert to fraction form
86,217.78/129,358.26 = 36,310.44/x - Step 3: Cross multiply
86,217.78x = 129,358.26 × 36,310.44 - Step 4: Simplify right side
86,217.78x = 4,697,055,338.23 - Step 5: Solve for x
x = 4,697,055,338.23/86,217.78 - Step 6: Final answer
x = 54,478.96
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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.