Finding the Fourth Proportional to 71,785.07, 107,692.99 and 21,869.19
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Solution
The fourth proportional to 71,785.07, 107,692.99 and 21,869.19 is: 32,808.47
Step by Step Solution
- Step 1: Write the proportion equation
71,785.07 : 107,692.99 = 21,869.19 : x - Step 2: Convert to fraction form
71,785.07/107,692.99 = 21,869.19/x - Step 3: Cross multiply
71,785.07x = 107,692.99 × 21,869.19 - Step 4: Simplify right side
71,785.07x = 2,355,158,001.46 - Step 5: Solve for x
x = 2,355,158,001.46/71,785.07 - Step 6: Final answer
x = 32,808.47
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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.