Finding the Fourth Proportional to 76,691.05, 115,204.29 and 54,646.09
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Solution
The fourth proportional to 76,691.05, 115,204.29 and 54,646.09 is: 82,088.64
Step by Step Solution
- Step 1: Write the proportion equation
76,691.05 : 115,204.29 = 54,646.09 : x - Step 2: Convert to fraction form
76,691.05/115,204.29 = 54,646.09/x - Step 3: Cross multiply
76,691.05x = 115,204.29 × 54,646.09 - Step 4: Simplify right side
76,691.05x = 6,295,463,999.73 - Step 5: Solve for x
x = 6,295,463,999.73/76,691.05 - Step 6: Final answer
x = 82,088.64
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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.