Finding the Fourth Proportional to 74,102.75, 102,261.80 and 40,568.75
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Solution
The fourth proportional to 74,102.75, 102,261.80 and 40,568.75 is: 55,984.88
Step by Step Solution
- Step 1: Write the proportion equation
74,102.75 : 102,261.80 = 40,568.75 : x - Step 2: Convert to fraction form
74,102.75/102,261.80 = 40,568.75/x - Step 3: Cross multiply
74,102.75x = 102,261.80 × 40,568.75 - Step 4: Simplify right side
74,102.75x = 4,148,633,398.75 - Step 5: Solve for x
x = 4,148,633,398.75/74,102.75 - Step 6: Final answer
x = 55,984.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.