Finding the Fourth Proportional to 71,605.26, 107,399.48 and 19,018.80
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Solution
The fourth proportional to 71,605.26, 107,399.48 and 19,018.80 is: 28,525.96
Step by Step Solution
- Step 1: Write the proportion equation
71,605.26 : 107,399.48 = 19,018.80 : x - Step 2: Convert to fraction form
71,605.26/107,399.48 = 19,018.80/x - Step 3: Cross multiply
71,605.26x = 107,399.48 × 19,018.80 - Step 4: Simplify right side
71,605.26x = 2,042,609,135.13 - Step 5: Solve for x
x = 2,042,609,135.13/71,605.26 - Step 6: Final answer
x = 28,525.96
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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.