Finding the Fourth Proportional to 86,615.40, 129,898.80 and 27,469.20
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Solution
The fourth proportional to 86,615.40, 129,898.80 and 27,469.20 is: 41,196.09
Step by Step Solution
- Step 1: Write the proportion equation
86,615.40 : 129,898.80 = 27,469.20 : x - Step 2: Convert to fraction form
86,615.40/129,898.80 = 27,469.20/x - Step 3: Cross multiply
86,615.40x = 129,898.80 × 27,469.20 - Step 4: Simplify right side
86,615.40x = 3,568,216,116.96 - Step 5: Solve for x
x = 3,568,216,116.96/86,615.40 - Step 6: Final answer
x = 41,196.09
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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.