Finding the Fourth Proportional to 86,313.44, 129,501.34 and 30,161.84
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Solution
The fourth proportional to 86,313.44, 129,501.34 and 30,161.84 is: 45,253.66
Step by Step Solution
- Step 1: Write the proportion equation
86,313.44 : 129,501.34 = 30,161.84 : x - Step 2: Convert to fraction form
86,313.44/129,501.34 = 30,161.84/x - Step 3: Cross multiply
86,313.44x = 129,501.34 × 30,161.84 - Step 4: Simplify right side
86,313.44x = 3,905,998,696.87 - Step 5: Solve for x
x = 3,905,998,696.87/86,313.44 - Step 6: Final answer
x = 45,253.66
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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.