Finding the Fourth Proportional to 81,124.58, 121,703.79 and 27,814.41
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Solution
The fourth proportional to 81,124.58, 121,703.79 and 27,814.41 is: 41,727.42
Step by Step Solution
- Step 1: Write the proportion equation
81,124.58 : 121,703.79 = 27,814.41 : x - Step 2: Convert to fraction form
81,124.58/121,703.79 = 27,814.41/x - Step 3: Cross multiply
81,124.58x = 121,703.79 × 27,814.41 - Step 4: Simplify right side
81,124.58x = 3,385,118,974.54 - Step 5: Solve for x
x = 3,385,118,974.54/81,124.58 - Step 6: Final answer
x = 41,727.42
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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.