Finding the Fourth Proportional to 86,615.40, 129,927.15 and 27,455.70
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Solution
The fourth proportional to 86,615.40, 129,927.15 and 27,455.70 is: 41,184.83
Step by Step Solution
- Step 1: Write the proportion equation
86,615.40 : 129,927.15 = 27,455.70 : x - Step 2: Convert to fraction form
86,615.40/129,927.15 = 27,455.70/x - Step 3: Cross multiply
86,615.40x = 129,927.15 × 27,455.70 - Step 4: Simplify right side
86,615.40x = 3,567,240,852.26 - Step 5: Solve for x
x = 3,567,240,852.26/86,615.40 - Step 6: Final answer
x = 41,184.83
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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.