Finding the Fourth Proportional to 76,762.09, 115,121.26 and 48,639.70
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Solution
The fourth proportional to 76,762.09, 115,121.26 and 48,639.70 is: 72,945.68
Step by Step Solution
- Step 1: Write the proportion equation
76,762.09 : 115,121.26 = 48,639.70 : x - Step 2: Convert to fraction form
76,762.09/115,121.26 = 48,639.70/x - Step 3: Cross multiply
76,762.09x = 115,121.26 × 48,639.70 - Step 4: Simplify right side
76,762.09x = 5,599,462,731.22 - Step 5: Solve for x
x = 5,599,462,731.22/76,762.09 - Step 6: Final answer
x = 72,945.68
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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.