Finding the Fourth Proportional to 81,666.40, 122,473.68 and 26,249.44
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Solution
The fourth proportional to 81,666.40, 122,473.68 and 26,249.44 is: 39,365.82
Step by Step Solution
- Step 1: Write the proportion equation
81,666.40 : 122,473.68 = 26,249.44 : x - Step 2: Convert to fraction form
81,666.40/122,473.68 = 26,249.44/x - Step 3: Cross multiply
81,666.40x = 122,473.68 × 26,249.44 - Step 4: Simplify right side
81,666.40x = 3,214,865,110.12 - Step 5: Solve for x
x = 3,214,865,110.12/81,666.40 - Step 6: Final answer
x = 39,365.82
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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.