Finding the Fourth Proportional to 85,603,905.81, 128,378,884.10 and 28,082,773.17
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Solution
The fourth proportional to 85,603,905.81, 128,378,884.10 and 28,082,773.17 is: 42,115,310.60
Step by Step Solution
- Step 1: Write the proportion equation
85,603,905.81 : 128,378,884.10 = 28,082,773.17 : x - Step 2: Convert to fraction form
85,603,905.81/128,378,884.10 = 28,082,773.17/x - Step 3: Cross multiply
85,603,905.81x = 128,378,884.10 × 28,082,773.17 - Step 4: Simplify right side
85,603,905.81x = 3,605,235,081,857,606 - Step 5: Solve for x
x = 3,605,235,081,857,606/85,603,905.81 - Step 6: Final answer
x = 42,115,310.60
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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.