Finding the Fourth Proportional to 76,891.47, 115,243.68 and 54,408.63
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Solution
The fourth proportional to 76,891.47, 115,243.68 and 54,408.63 is: 81,546.77
Step by Step Solution
- Step 1: Write the proportion equation
76,891.47 : 115,243.68 = 54,408.63 : x - Step 2: Convert to fraction form
76,891.47/115,243.68 = 54,408.63/x - Step 3: Cross multiply
76,891.47x = 115,243.68 × 54,408.63 - Step 4: Simplify right side
76,891.47x = 6,270,250,744.96 - Step 5: Solve for x
x = 6,270,250,744.96/76,891.47 - Step 6: Final answer
x = 81,546.77
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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.