Finding the Fourth Proportional to 74,512.62, 102,828.11 and 40,521.44
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Solution
The fourth proportional to 74,512.62, 102,828.11 and 40,521.44 is: 55,919.96
Step by Step Solution
- Step 1: Write the proportion equation
74,512.62 : 102,828.11 = 40,521.44 : x - Step 2: Convert to fraction form
74,512.62/102,828.11 = 40,521.44/x - Step 3: Cross multiply
74,512.62x = 102,828.11 × 40,521.44 - Step 4: Simplify right side
74,512.62x = 4,166,742,372.93 - Step 5: Solve for x
x = 4,166,742,372.93/74,512.62 - Step 6: Final answer
x = 55,919.96
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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.