Finding the Fourth Proportional to 88,688,408.10, 121,501,087.97 and 85,372,555.25
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Solution
The fourth proportional to 88,688,408.10, 121,501,087.97 and 85,372,555.25 is: 116,958,445.49
Step by Step Solution
- Step 1: Write the proportion equation
88,688,408.10 : 121,501,087.97 = 85,372,555.25 : x - Step 2: Convert to fraction form
88,688,408.10/121,501,087.97 = 85,372,555.25/x - Step 3: Cross multiply
88,688,408.10x = 121,501,087.97 × 85,372,555.25 - Step 4: Simplify right side
88,688,408.10x = 10,372,858,344,619,568 - Step 5: Solve for x
x = 10,372,858,344,619,568/88,688,408.10 - Step 6: Final answer
x = 116,958,445.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.