Finding the Fourth Proportional to 71,316.70, 106,800.09 and 47,872.06
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Solution
The fourth proportional to 71,316.70, 106,800.09 and 47,872.06 is: 71,690.65
Step by Step Solution
- Step 1: Write the proportion equation
71,316.70 : 106,800.09 = 47,872.06 : x - Step 2: Convert to fraction form
71,316.70/106,800.09 = 47,872.06/x - Step 3: Cross multiply
71,316.70x = 106,800.09 × 47,872.06 - Step 4: Simplify right side
71,316.70x = 5,112,740,316.49 - Step 5: Solve for x
x = 5,112,740,316.49/71,316.70 - Step 6: Final answer
x = 71,690.65
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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.