Finding the Fourth Proportional to 81,642.22, 122,467.89 and 25,490.09
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Solution
The fourth proportional to 81,642.22, 122,467.89 and 25,490.09 is: 38,236.55
Step by Step Solution
- Step 1: Write the proportion equation
81,642.22 : 122,467.89 = 25,490.09 : x - Step 2: Convert to fraction form
81,642.22/122,467.89 = 25,490.09/x - Step 3: Cross multiply
81,642.22x = 122,467.89 × 25,490.09 - Step 4: Simplify right side
81,642.22x = 3,121,716,925.87 - Step 5: Solve for x
x = 3,121,716,925.87/81,642.22 - Step 6: Final answer
x = 38,236.55
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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.