Finding the Fourth Proportional to 81,551,160.20, 122,326,740.30 and 45,271,454.60
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Solution
The fourth proportional to 81,551,160.20, 122,326,740.30 and 45,271,454.60 is: 67,907,181.90
Step by Step Solution
- Step 1: Write the proportion equation
81,551,160.20 : 122,326,740.30 = 45,271,454.60 : x - Step 2: Convert to fraction form
81,551,160.20/122,326,740.30 = 45,271,454.60/x - Step 3: Cross multiply
81,551,160.20x = 122,326,740.30 × 45,271,454.60 - Step 4: Simplify right side
81,551,160.20x = 5,537,909,469,857,440 - Step 5: Solve for x
x = 5,537,909,469,857,440/81,551,160.20 - Step 6: Final answer
x = 67,907,181.90
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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.