Finding the Fourth Proportional to 71,772,904.40, 107,531,052.60 and 43,678,216.40
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Solution
The fourth proportional to 71,772,904.40, 107,531,052.60 and 43,678,216.40 is: 65,439,243.74
Step by Step Solution
- Step 1: Write the proportion equation
71,772,904.40 : 107,531,052.60 = 43,678,216.40 : x - Step 2: Convert to fraction form
71,772,904.40/107,531,052.60 = 43,678,216.40/x - Step 3: Cross multiply
71,772,904.40x = 107,531,052.60 × 43,678,216.40 - Step 4: Simplify right side
71,772,904.40x = 4,696,764,585,182,582 - Step 5: Solve for x
x = 4,696,764,585,182,582/71,772,904.40 - Step 6: Final answer
x = 65,439,243.74
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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.