Finding the Fourth Proportional to 71,608.20, 107,442.67 and 38,319.63
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Solution
The fourth proportional to 71,608.20, 107,442.67 and 38,319.63 is: 57,495.70
Step by Step Solution
- Step 1: Write the proportion equation
71,608.20 : 107,442.67 = 38,319.63 : x - Step 2: Convert to fraction form
71,608.20/107,442.67 = 38,319.63/x - Step 3: Cross multiply
71,608.20x = 107,442.67 × 38,319.63 - Step 4: Simplify right side
71,608.20x = 4,117,163,360.61 - Step 5: Solve for x
x = 4,117,163,360.61/71,608.20 - Step 6: Final answer
x = 57,495.70
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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.