Finding the Fourth Proportional to 81,296.79, 121,932.86 and 22,137.12
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Solution
The fourth proportional to 81,296.79, 121,932.86 and 22,137.12 is: 33,202.32
Step by Step Solution
- Step 1: Write the proportion equation
81,296.79 : 121,932.86 = 22,137.12 : x - Step 2: Convert to fraction form
81,296.79/121,932.86 = 22,137.12/x - Step 3: Cross multiply
81,296.79x = 121,932.86 × 22,137.12 - Step 4: Simplify right side
81,296.79x = 2,699,242,243.08 - Step 5: Solve for x
x = 2,699,242,243.08/81,296.79 - Step 6: Final answer
x = 33,202.32
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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.