Finding the Fourth Proportional to 90,135,354.72, 135,357,757.50 and 55,324,879.62
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Solution
The fourth proportional to 90,135,354.72, 135,357,757.50 and 55,324,879.62 is: 83,082,289.55
Step by Step Solution
- Step 1: Write the proportion equation
90,135,354.72 : 135,357,757.50 = 55,324,879.62 : x - Step 2: Convert to fraction form
90,135,354.72/135,357,757.50 = 55,324,879.62/x - Step 3: Cross multiply
90,135,354.72x = 135,357,757.50 × 55,324,879.62 - Step 4: Simplify right side
90,135,354.72x = 7,488,651,639,320,652 - Step 5: Solve for x
x = 7,488,651,639,320,652/90,135,354.72 - Step 6: Final answer
x = 83,082,289.55
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1.5x scale
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.