Finding the Fourth Proportional to 71,799.75, 107,699.63 and 19,207.87
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Solution
The fourth proportional to 71,799.75, 107,699.63 and 19,207.87 is: 28,811.80
Step by Step Solution
- Step 1: Write the proportion equation
71,799.75 : 107,699.63 = 19,207.87 : x - Step 2: Convert to fraction form
71,799.75/107,699.63 = 19,207.87/x - Step 3: Cross multiply
71,799.75x = 107,699.63 × 19,207.87 - Step 4: Simplify right side
71,799.75x = 2,068,680,126.80 - Step 5: Solve for x
x = 2,068,680,126.80/71,799.75 - Step 6: Final answer
x = 28,811.80
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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.