Finding the Fourth Proportional to 87,817.97, 131,727.30 and 21,257.99
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Solution
The fourth proportional to 87,817.97, 131,727.30 and 21,257.99 is: 31,887.07
Step by Step Solution
- Step 1: Write the proportion equation
87,817.97 : 131,727.30 = 21,257.99 : x - Step 2: Convert to fraction form
87,817.97/131,727.30 = 21,257.99/x - Step 3: Cross multiply
87,817.97x = 131,727.30 × 21,257.99 - Step 4: Simplify right side
87,817.97x = 2,800,257,381.75 - Step 5: Solve for x
x = 2,800,257,381.75/87,817.97 - Step 6: Final answer
x = 31,887.07
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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.