Finding the Fourth Proportional to 86,749.80, 130,128.30 and 27,583.80
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Solution
The fourth proportional to 86,749.80, 130,128.30 and 27,583.80 is: 41,376.84
Step by Step Solution
- Step 1: Write the proportion equation
86,749.80 : 130,128.30 = 27,583.80 : x - Step 2: Convert to fraction form
86,749.80/130,128.30 = 27,583.80/x - Step 3: Cross multiply
86,749.80x = 130,128.30 × 27,583.80 - Step 4: Simplify right side
86,749.80x = 3,589,433,001.54 - Step 5: Solve for x
x = 3,589,433,001.54/86,749.80 - Step 6: Final answer
x = 41,376.84
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1.5x scale
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.