Finding the Fourth Proportional to 81,676,845.60, 122,160,974.40 and 73,102,930.80
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Solution
The fourth proportional to 81,676,845.60, 122,160,974.40 and 73,102,930.80 is: 109,337,293.73
Step by Step Solution
- Step 1: Write the proportion equation
81,676,845.60 : 122,160,974.40 = 73,102,930.80 : x - Step 2: Convert to fraction form
81,676,845.60/122,160,974.40 = 73,102,930.80/x - Step 3: Cross multiply
81,676,845.60x = 122,160,974.40 × 73,102,930.80 - Step 4: Simplify right side
81,676,845.60x = 8,930,325,258,023,772 - Step 5: Solve for x
x = 8,930,325,258,023,772/81,676,845.60 - Step 6: Final answer
x = 109,337,293.73
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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.