Finding the Fourth Proportional to 81,088,964.06, 121,632,431.61 and 19,678,631.54
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Solution
The fourth proportional to 81,088,964.06, 121,632,431.61 and 19,678,631.54 is: 29,517,701.12
Step by Step Solution
- Step 1: Write the proportion equation
81,088,964.06 : 121,632,431.61 = 19,678,631.54 : x - Step 2: Convert to fraction form
81,088,964.06/121,632,431.61 = 19,678,631.54/x - Step 3: Cross multiply
81,088,964.06x = 121,632,431.61 × 19,678,631.54 - Step 4: Simplify right side
81,088,964.06x = 2,393,559,804,967,439 - Step 5: Solve for x
x = 2,393,559,804,967,439/81,088,964.06 - Step 6: Final answer
x = 29,517,701.12
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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.