Finding the Fourth Proportional to 103,543.62, 155,315.68 and 31,497.15
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Solution
The fourth proportional to 103,543.62, 155,315.68 and 31,497.15 is: 47,245.80
Step by Step Solution
- Step 1: Write the proportion equation
103,543.62 : 155,315.68 = 31,497.15 : x - Step 2: Convert to fraction form
103,543.62/155,315.68 = 31,497.15/x - Step 3: Cross multiply
103,543.62x = 155,315.68 × 31,497.15 - Step 4: Simplify right side
103,543.62x = 4,892,001,270.31 - Step 5: Solve for x
x = 4,892,001,270.31/103,543.62 - Step 6: Final answer
x = 47,245.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.