Finding the Fourth Proportional to 86,643.24, 129,963.83 and 27,479.42
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Solution
The fourth proportional to 86,643.24, 129,963.83 and 27,479.42 is: 41,218.80
Step by Step Solution
- Step 1: Write the proportion equation
86,643.24 : 129,963.83 = 27,479.42 : x - Step 2: Convert to fraction form
86,643.24/129,963.83 = 27,479.42/x - Step 3: Cross multiply
86,643.24x = 129,963.83 × 27,479.42 - Step 4: Simplify right side
86,643.24x = 3,571,330,369.53 - Step 5: Solve for x
x = 3,571,330,369.53/86,643.24 - Step 6: Final answer
x = 41,218.80
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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.