Finding the Fourth Proportional to 76,975.44, 115,474.68 and 67,043.28
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Solution
The fourth proportional to 76,975.44, 115,474.68 and 67,043.28 is: 100,574.95
Step by Step Solution
- Step 1: Write the proportion equation
76,975.44 : 115,474.68 = 67,043.28 : x - Step 2: Convert to fraction form
76,975.44/115,474.68 = 67,043.28/x - Step 3: Cross multiply
76,975.44x = 115,474.68 × 67,043.28 - Step 4: Simplify right side
76,975.44x = 7,741,801,304.15 - Step 5: Solve for x
x = 7,741,801,304.15/76,975.44 - Step 6: Final answer
x = 100,574.95
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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.