Finding the Fourth Proportional to 86,927.88, 130,391.84 and 55,959.96
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Solution
The fourth proportional to 86,927.88, 130,391.84 and 55,959.96 is: 83,939.95
Step by Step Solution
- Step 1: Write the proportion equation
86,927.88 : 130,391.84 = 55,959.96 : x - Step 2: Convert to fraction form
86,927.88/130,391.84 = 55,959.96/x - Step 3: Cross multiply
86,927.88x = 130,391.84 × 55,959.96 - Step 4: Simplify right side
86,927.88x = 7,296,722,150.73 - Step 5: Solve for x
x = 7,296,722,150.73/86,927.88 - Step 6: Final answer
x = 83,939.95
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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.