Finding the Fourth Proportional to 81,521.64, 122,269.86 and 33,495.12
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Solution
The fourth proportional to 81,521.64, 122,269.86 and 33,495.12 is: 50,237.50
Step by Step Solution
- Step 1: Write the proportion equation
81,521.64 : 122,269.86 = 33,495.12 : x - Step 2: Convert to fraction form
81,521.64/122,269.86 = 33,495.12/x - Step 3: Cross multiply
81,521.64x = 122,269.86 × 33,495.12 - Step 4: Simplify right side
81,521.64x = 4,095,443,633.08 - Step 5: Solve for x
x = 4,095,443,633.08/81,521.64 - Step 6: Final answer
x = 50,237.50
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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.