Finding the Fourth Proportional to 77,207.80, 115,811.70 and 27,344.20
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Solution
The fourth proportional to 77,207.80, 115,811.70 and 27,344.20 is: 41,016.30
Step by Step Solution
- Step 1: Write the proportion equation
77,207.80 : 115,811.70 = 27,344.20 : x - Step 2: Convert to fraction form
77,207.80/115,811.70 = 27,344.20/x - Step 3: Cross multiply
77,207.80x = 115,811.70 × 27,344.20 - Step 4: Simplify right side
77,207.80x = 3,166,778,287.14 - Step 5: Solve for x
x = 3,166,778,287.14/77,207.80 - Step 6: Final answer
x = 41,016.30
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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.