Finding the Fourth Proportional to 74,539.26, 102,861.21 and 40,547.79
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Solution
The fourth proportional to 74,539.26, 102,861.21 and 40,547.79 is: 55,954.34
Step by Step Solution
- Step 1: Write the proportion equation
74,539.26 : 102,861.21 = 40,547.79 : x - Step 2: Convert to fraction form
74,539.26/102,861.21 = 40,547.79/x - Step 3: Cross multiply
74,539.26x = 102,861.21 × 40,547.79 - Step 4: Simplify right side
74,539.26x = 4,170,794,742.23 - Step 5: Solve for x
x = 4,170,794,742.23/74,539.26 - Step 6: Final answer
x = 55,954.34
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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.