Finding the Fourth Proportional to 18,125,805.76, 27,187,971.28 and 4,478,608.46
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Solution
The fourth proportional to 18,125,805.76, 27,187,971.28 and 4,478,608.46 is: 6,717,730.50
Step by Step Solution
- Step 1: Write the proportion equation
18,125,805.76 : 27,187,971.28 = 4,478,608.46 : x - Step 2: Convert to fraction form
18,125,805.76/27,187,971.28 = 4,478,608.46/x - Step 3: Cross multiply
18,125,805.76x = 27,187,971.28 × 4,478,608.46 - Step 4: Simplify right side
18,125,805.76x = 121,764,278,266,810.61 - Step 5: Solve for x
x = 121,764,278,266,810.61/18,125,805.76 - Step 6: Final answer
x = 6,717,730.50
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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.