Finding the Fourth Proportional to 71,943.84, 107,897.35 and 21,331.03
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Solution
The fourth proportional to 71,943.84, 107,897.35 and 21,331.03 is: 31,991.09
Step by Step Solution
- Step 1: Write the proportion equation
71,943.84 : 107,897.35 = 21,331.03 : x - Step 2: Convert to fraction form
71,943.84/107,897.35 = 21,331.03/x - Step 3: Cross multiply
71,943.84x = 107,897.35 × 21,331.03 - Step 4: Simplify right side
71,943.84x = 2,301,561,609.77 - Step 5: Solve for x
x = 2,301,561,609.77/71,943.84 - Step 6: Final answer
x = 31,991.09
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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.