Finding the Fourth Proportional to 87,734.29, 121,072.96 and 47,448.09
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Solution
The fourth proportional to 87,734.29, 121,072.96 and 47,448.09 is: 65,478.17
Step by Step Solution
- Step 1: Write the proportion equation
87,734.29 : 121,072.96 = 47,448.09 : x - Step 2: Convert to fraction form
87,734.29/121,072.96 = 47,448.09/x - Step 3: Cross multiply
87,734.29x = 121,072.96 × 47,448.09 - Step 4: Simplify right side
87,734.29x = 5,744,680,702.65 - Step 5: Solve for x
x = 5,744,680,702.65/87,734.29 - Step 6: Final answer
x = 65,478.17
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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.