Finding the Fourth Proportional to 71,675.14, 107,512.95 and 21,755.65
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Solution
The fourth proportional to 71,675.14, 107,512.95 and 21,755.65 is: 32,633.55
Step by Step Solution
- Step 1: Write the proportion equation
71,675.14 : 107,512.95 = 21,755.65 : x - Step 2: Convert to fraction form
71,675.14/107,512.95 = 21,755.65/x - Step 3: Cross multiply
71,675.14x = 107,512.95 × 21,755.65 - Step 4: Simplify right side
71,675.14x = 2,339,014,110.67 - Step 5: Solve for x
x = 2,339,014,110.67/71,675.14 - Step 6: Final answer
x = 32,633.55
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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.