Finding the Fourth Proportional to 86,891.18, 130,342.69 and 27,731.31
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Solution
The fourth proportional to 86,891.18, 130,342.69 and 27,731.31 is: 41,598.85
Step by Step Solution
- Step 1: Write the proportion equation
86,891.18 : 130,342.69 = 27,731.31 : x - Step 2: Convert to fraction form
86,891.18/130,342.69 = 27,731.31/x - Step 3: Cross multiply
86,891.18x = 130,342.69 × 27,731.31 - Step 4: Simplify right side
86,891.18x = 3,614,573,416.09 - Step 5: Solve for x
x = 3,614,573,416.09/86,891.18 - Step 6: Final answer
x = 41,598.85
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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.