Finding the Fourth Proportional to 97,939.18, 135,184.09 and 57,676.29
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Solution
The fourth proportional to 97,939.18, 135,184.09 and 57,676.29 is: 79,609.78
Step by Step Solution
- Step 1: Write the proportion equation
97,939.18 : 135,184.09 = 57,676.29 : x - Step 2: Convert to fraction form
97,939.18/135,184.09 = 57,676.29/x - Step 3: Cross multiply
97,939.18x = 135,184.09 × 57,676.29 - Step 4: Simplify right side
97,939.18x = 7,796,916,778.23 - Step 5: Solve for x
x = 7,796,916,778.23/97,939.18 - Step 6: Final answer
x = 79,609.78
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.