Finding the Fourth Proportional to 86,063.21, 129,089.79 and 38,666.06
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Solution
The fourth proportional to 86,063.21, 129,089.79 and 38,666.06 is: 57,996.83
Step by Step Solution
- Step 1: Write the proportion equation
86,063.21 : 129,089.79 = 38,666.06 : x - Step 2: Convert to fraction form
86,063.21/129,089.79 = 38,666.06/x - Step 3: Cross multiply
86,063.21x = 129,089.79 × 38,666.06 - Step 4: Simplify right side
86,063.21x = 4,991,392,920.08 - Step 5: Solve for x
x = 4,991,392,920.08/86,063.21 - Step 6: Final answer
x = 57,996.83
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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.