Finding the Fourth Proportional to 81,857.49, 122,849.87 and 37,486.75
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Solution
The fourth proportional to 81,857.49, 122,849.87 and 37,486.75 is: 56,259.27
Step by Step Solution
- Step 1: Write the proportion equation
81,857.49 : 122,849.87 = 37,486.75 : x - Step 2: Convert to fraction form
81,857.49/122,849.87 = 37,486.75/x - Step 3: Cross multiply
81,857.49x = 122,849.87 × 37,486.75 - Step 4: Simplify right side
81,857.49x = 4,605,242,364.22 - Step 5: Solve for x
x = 4,605,242,364.22/81,857.49 - Step 6: Final answer
x = 56,259.27
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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.