Finding the Fourth Proportional to 74,523.25, 102,842.36 and 40,531.74
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Solution
The fourth proportional to 74,523.25, 102,842.36 and 40,531.74 is: 55,933.95
Step by Step Solution
- Step 1: Write the proportion equation
74,523.25 : 102,842.36 = 40,531.74 : x - Step 2: Convert to fraction form
74,523.25/102,842.36 = 40,531.74/x - Step 3: Cross multiply
74,523.25x = 102,842.36 × 40,531.74 - Step 4: Simplify right side
74,523.25x = 4,168,379,796.51 - Step 5: Solve for x
x = 4,168,379,796.51/74,523.25 - Step 6: Final answer
x = 55,933.95
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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.