Finding the Fourth Proportional to 76,685.76, 115,076.44 and 29,305.08
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Solution
The fourth proportional to 76,685.76, 115,076.44 and 29,305.08 is: 43,975.89
Step by Step Solution
- Step 1: Write the proportion equation
76,685.76 : 115,076.44 = 29,305.08 : x - Step 2: Convert to fraction form
76,685.76/115,076.44 = 29,305.08/x - Step 3: Cross multiply
76,685.76x = 115,076.44 × 29,305.08 - Step 4: Simplify right side
76,685.76x = 3,372,324,280.32 - Step 5: Solve for x
x = 3,372,324,280.32/76,685.76 - Step 6: Final answer
x = 43,975.89
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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.