Finding the Fourth Proportional to 87,855.13, 131,781.49 and 21,295.83
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Solution
The fourth proportional to 87,855.13, 131,781.49 and 21,295.83 is: 31,943.45
Step by Step Solution
- Step 1: Write the proportion equation
87,855.13 : 131,781.49 = 21,295.83 : x - Step 2: Convert to fraction form
87,855.13/131,781.49 = 21,295.83/x - Step 3: Cross multiply
87,855.13x = 131,781.49 × 21,295.83 - Step 4: Simplify right side
87,855.13x = 2,806,396,208.19 - Step 5: Solve for x
x = 2,806,396,208.19/87,855.13 - Step 6: Final answer
x = 31,943.45
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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.