Finding the Fourth Proportional to 89,423,998.80, 134,135,998.20 and 40,956,579.60
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Solution
The fourth proportional to 89,423,998.80, 134,135,998.20 and 40,956,579.60 is: 61,434,869.40
Step by Step Solution
- Step 1: Write the proportion equation
89,423,998.80 : 134,135,998.20 = 40,956,579.60 : x - Step 2: Convert to fraction form
89,423,998.80/134,135,998.20 = 40,956,579.60/x - Step 3: Cross multiply
89,423,998.80x = 134,135,998.20 × 40,956,579.60 - Step 4: Simplify right side
89,423,998.80x = 5,493,751,687,503,757 - Step 5: Solve for x
x = 5,493,751,687,503,757/89,423,998.80 - Step 6: Final answer
x = 61,434,869.40
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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.