Finding the Fourth Proportional to 90,375.21, 124,689.29 and 52,129.62
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Solution
The fourth proportional to 90,375.21, 124,689.29 and 52,129.62 is: 71,922.43
Step by Step Solution
- Step 1: Write the proportion equation
90,375.21 : 124,689.29 = 52,129.62 : x - Step 2: Convert to fraction form
90,375.21/124,689.29 = 52,129.62/x - Step 3: Cross multiply
90,375.21x = 124,689.29 × 52,129.62 - Step 4: Simplify right side
90,375.21x = 6,500,005,045.12 - Step 5: Solve for x
x = 6,500,005,045.12/90,375.21 - Step 6: Final answer
x = 71,922.43
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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.