Finding the Fourth Proportional to 81,940.37, 122,808.44 and 29,291.99
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Solution
The fourth proportional to 81,940.37, 122,808.44 and 29,291.99 is: 43,901.47
Step by Step Solution
- Step 1: Write the proportion equation
81,940.37 : 122,808.44 = 29,291.99 : x - Step 2: Convert to fraction form
81,940.37/122,808.44 = 29,291.99/x - Step 3: Cross multiply
81,940.37x = 122,808.44 × 29,291.99 - Step 4: Simplify right side
81,940.37x = 3,597,302,835.89 - Step 5: Solve for x
x = 3,597,302,835.89/81,940.37 - Step 6: Final answer
x = 43,901.47
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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.