Finding the Fourth Proportional to 76,891.08, 115,341.18 and 21,487.08
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Solution
The fourth proportional to 76,891.08, 115,341.18 and 21,487.08 is: 32,231.89
Step by Step Solution
- Step 1: Write the proportion equation
76,891.08 : 115,341.18 = 21,487.08 : x - Step 2: Convert to fraction form
76,891.08/115,341.18 = 21,487.08/x - Step 3: Cross multiply
76,891.08x = 115,341.18 × 21,487.08 - Step 4: Simplify right side
76,891.08x = 2,478,345,161.95 - Step 5: Solve for x
x = 2,478,345,161.95/76,891.08 - Step 6: Final answer
x = 32,231.89
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1.5x scale
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.