Finding the Fourth Proportional to 81,331.98, 121,820.28 and 33,802.96
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Solution
The fourth proportional to 81,331.98, 121,820.28 and 33,802.96 is: 50,630.59
Step by Step Solution
- Step 1: Write the proportion equation
81,331.98 : 121,820.28 = 33,802.96 : x - Step 2: Convert to fraction form
81,331.98/121,820.28 = 33,802.96/x - Step 3: Cross multiply
81,331.98x = 121,820.28 × 33,802.96 - Step 4: Simplify right side
81,331.98x = 4,117,886,052.03 - Step 5: Solve for x
x = 4,117,886,052.03/81,331.98 - Step 6: Final answer
x = 50,630.59
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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.