Finding the Fourth Proportional to 76,916.80, 115,374.64 and 41,394.80
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Solution
The fourth proportional to 76,916.80, 115,374.64 and 41,394.80 is: 62,091.90
Step by Step Solution
- Step 1: Write the proportion equation
76,916.80 : 115,374.64 = 41,394.80 : x - Step 2: Convert to fraction form
76,916.80/115,374.64 = 41,394.80/x - Step 3: Cross multiply
76,916.80x = 115,374.64 × 41,394.80 - Step 4: Simplify right side
76,916.80x = 4,775,910,147.87 - Step 5: Solve for x
x = 4,775,910,147.87/76,916.80 - Step 6: Final answer
x = 62,091.90
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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.