Finding the Fourth Proportional to 81,799.81, 122,701.26 and 25,638.68
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Solution
The fourth proportional to 81,799.81, 122,701.26 and 25,638.68 is: 38,458.50
Step by Step Solution
- Step 1: Write the proportion equation
81,799.81 : 122,701.26 = 25,638.68 : x - Step 2: Convert to fraction form
81,799.81/122,701.26 = 25,638.68/x - Step 3: Cross multiply
81,799.81x = 122,701.26 × 25,638.68 - Step 4: Simplify right side
81,799.81x = 3,145,898,340.74 - Step 5: Solve for x
x = 3,145,898,340.74/81,799.81 - Step 6: Final answer
x = 38,458.50
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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.