Finding the Fourth Proportional to 81,088,976.10, 121,632,449.55 and 19,678,643.54
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Solution
The fourth proportional to 81,088,976.10, 121,632,449.55 and 19,678,643.54 is: 29,517,719.09
Step by Step Solution
- Step 1: Write the proportion equation
81,088,976.10 : 121,632,449.55 = 19,678,643.54 : x - Step 2: Convert to fraction form
81,088,976.10/121,632,449.55 = 19,678,643.54/x - Step 3: Cross multiply
81,088,976.10x = 121,632,449.55 × 19,678,643.54 - Step 4: Simplify right side
81,088,976.10x = 2,393,561,617,591,483 - Step 5: Solve for x
x = 2,393,561,617,591,483/81,088,976.10 - Step 6: Final answer
x = 29,517,719.09
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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.