Finding the Fourth Proportional to 81,608.94, 122,399.34 and 21,637.84
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Solution
The fourth proportional to 81,608.94, 122,399.34 and 21,637.84 is: 32,453.03
Step by Step Solution
- Step 1: Write the proportion equation
81,608.94 : 122,399.34 = 21,637.84 : x - Step 2: Convert to fraction form
81,608.94/122,399.34 = 21,637.84/x - Step 3: Cross multiply
81,608.94x = 122,399.34 × 21,637.84 - Step 4: Simplify right side
81,608.94x = 2,648,457,335.03 - Step 5: Solve for x
x = 2,648,457,335.03/81,608.94 - Step 6: Final answer
x = 32,453.03
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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.