Finding the Fourth Proportional to 86,422.68, 129,623.09 and 33,869.07
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Solution
The fourth proportional to 86,422.68, 129,623.09 and 33,869.07 is: 50,799.32
Step by Step Solution
- Step 1: Write the proportion equation
86,422.68 : 129,623.09 = 33,869.07 : x - Step 2: Convert to fraction form
86,422.68/129,623.09 = 33,869.07/x - Step 3: Cross multiply
86,422.68x = 129,623.09 × 33,869.07 - Step 4: Simplify right side
86,422.68x = 4,390,213,339.48 - Step 5: Solve for x
x = 4,390,213,339.48/86,422.68 - Step 6: Final answer
x = 50,799.32
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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.