Finding the Fourth Proportional to 76,965.37, 115,418.64 and 36,972.96
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Solution
The fourth proportional to 76,965.37, 115,418.64 and 36,972.96 is: 55,445.31
Step by Step Solution
- Step 1: Write the proportion equation
76,965.37 : 115,418.64 = 36,972.96 : x - Step 2: Convert to fraction form
76,965.37/115,418.64 = 36,972.96/x - Step 3: Cross multiply
76,965.37x = 115,418.64 × 36,972.96 - Step 4: Simplify right side
76,965.37x = 4,267,368,907.06 - Step 5: Solve for x
x = 4,267,368,907.06/76,965.37 - Step 6: Final answer
x = 55,445.31
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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.