Finding the Fourth Proportional to 81,966.63, 122,814.06 and 28,629.96
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Solution
The fourth proportional to 81,966.63, 122,814.06 and 28,629.96 is: 42,897.48
Step by Step Solution
- Step 1: Write the proportion equation
81,966.63 : 122,814.06 = 28,629.96 : x - Step 2: Convert to fraction form
81,966.63/122,814.06 = 28,629.96/x - Step 3: Cross multiply
81,966.63x = 122,814.06 × 28,629.96 - Step 4: Simplify right side
81,966.63x = 3,516,161,625.24 - Step 5: Solve for x
x = 3,516,161,625.24/81,966.63 - Step 6: Final answer
x = 42,897.48
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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.