Finding the Fourth Proportional to 79,174.68, 118,676.16 and 39,636.42
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Solution
The fourth proportional to 79,174.68, 118,676.16 and 39,636.42 is: 59,411.65
Step by Step Solution
- Step 1: Write the proportion equation
79,174.68 : 118,676.16 = 39,636.42 : x - Step 2: Convert to fraction form
79,174.68/118,676.16 = 39,636.42/x - Step 3: Cross multiply
79,174.68x = 118,676.16 × 39,636.42 - Step 4: Simplify right side
79,174.68x = 4,703,898,121.75 - Step 5: Solve for x
x = 4,703,898,121.75/79,174.68 - Step 6: Final answer
x = 59,411.65
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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.