Finding the Fourth Proportional to 86,039.68, 129,054.88 and 26,868.56
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Solution
The fourth proportional to 86,039.68, 129,054.88 and 26,868.56 is: 40,301.39
Step by Step Solution
- Step 1: Write the proportion equation
86,039.68 : 129,054.88 = 26,868.56 : x - Step 2: Convert to fraction form
86,039.68/129,054.88 = 26,868.56/x - Step 3: Cross multiply
86,039.68x = 129,054.88 × 26,868.56 - Step 4: Simplify right side
86,039.68x = 3,467,518,786.57 - Step 5: Solve for x
x = 3,467,518,786.57/86,039.68 - Step 6: Final answer
x = 40,301.39
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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.