Finding the Fourth Proportional to 76,776.11, 115,270.07 and 53,027.85
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Solution
The fourth proportional to 76,776.11, 115,270.07 and 53,027.85 is: 79,614.92
Step by Step Solution
- Step 1: Write the proportion equation
76,776.11 : 115,270.07 = 53,027.85 : x - Step 2: Convert to fraction form
76,776.11/115,270.07 = 53,027.85/x - Step 3: Cross multiply
76,776.11x = 115,270.07 × 53,027.85 - Step 4: Simplify right side
76,776.11x = 6,112,523,716.31 - Step 5: Solve for x
x = 6,112,523,716.31/76,776.11 - Step 6: Final answer
x = 79,614.92
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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.