Finding the Fourth Proportional to 81,669,724.12, 122,516,761.02 and 29,143,304.20
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Solution
The fourth proportional to 81,669,724.12, 122,516,761.02 and 29,143,304.20 is: 43,719,300.81
Step by Step Solution
- Step 1: Write the proportion equation
81,669,724.12 : 122,516,761.02 = 29,143,304.20 : x - Step 2: Convert to fraction form
81,669,724.12/122,516,761.02 = 29,143,304.20/x - Step 3: Cross multiply
81,669,724.12x = 122,516,761.02 × 29,143,304.20 - Step 4: Simplify right side
81,669,724.12x = 3,570,543,236,004,562 - Step 5: Solve for x
x = 3,570,543,236,004,562/81,669,724.12 - Step 6: Final answer
x = 43,719,300.81
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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.