Finding the Fourth Proportional to 76,979.80, 115,469.70 and 50,699.80
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Solution
The fourth proportional to 76,979.80, 115,469.70 and 50,699.80 is: 76,049.70
Step by Step Solution
- Step 1: Write the proportion equation
76,979.80 : 115,469.70 = 50,699.80 : x - Step 2: Convert to fraction form
76,979.80/115,469.70 = 50,699.80/x - Step 3: Cross multiply
76,979.80x = 115,469.70 × 50,699.80 - Step 4: Simplify right side
76,979.80x = 5,854,290,696.06 - Step 5: Solve for x
x = 5,854,290,696.06/76,979.80 - Step 6: Final answer
x = 76,049.70
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1.5x scale
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.