Finding the Fourth Proportional to 91,961.12, 137,891.67 and 28,753.99
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Solution
The fourth proportional to 91,961.12, 137,891.67 and 28,753.99 is: 43,115.34
Step by Step Solution
- Step 1: Write the proportion equation
91,961.12 : 137,891.67 = 28,753.99 : x - Step 2: Convert to fraction form
91,961.12/137,891.67 = 28,753.99/x - Step 3: Cross multiply
91,961.12x = 137,891.67 × 28,753.99 - Step 4: Simplify right side
91,961.12x = 3,964,935,247.71 - Step 5: Solve for x
x = 3,964,935,247.71/91,961.12 - Step 6: Final answer
x = 43,115.34
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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.