Finding the Fourth Proportional to 80,878,886.40, 121,318,329.60 and 53,669,107.20
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Solution
The fourth proportional to 80,878,886.40, 121,318,329.60 and 53,669,107.20 is: 80,503,660.80
Step by Step Solution
- Step 1: Write the proportion equation
80,878,886.40 : 121,318,329.60 = 53,669,107.20 : x - Step 2: Convert to fraction form
80,878,886.40/121,318,329.60 = 53,669,107.20/x - Step 3: Cross multiply
80,878,886.40x = 121,318,329.60 × 53,669,107.20 - Step 4: Simplify right side
80,878,886.40x = 6,511,046,436,627,333 - Step 5: Solve for x
x = 6,511,046,436,627,333/80,878,886.40 - Step 6: Final answer
x = 80,503,660.80
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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.