Finding the Fourth Proportional to 86,512.44, 129,708.18 and 39,739.80
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Solution
The fourth proportional to 86,512.44, 129,708.18 and 39,739.80 is: 59,581.92
Step by Step Solution
- Step 1: Write the proportion equation
86,512.44 : 129,708.18 = 39,739.80 : x - Step 2: Convert to fraction form
86,512.44/129,708.18 = 39,739.80/x - Step 3: Cross multiply
86,512.44x = 129,708.18 × 39,739.80 - Step 4: Simplify right side
86,512.44x = 5,154,577,131.56 - Step 5: Solve for x
x = 5,154,577,131.56/86,512.44 - Step 6: Final answer
x = 59,581.92
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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.