Finding the Fourth Proportional to 75,613.75, 113,420.64 and 20,209.75
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Solution
The fourth proportional to 75,613.75, 113,420.64 and 20,209.75 is: 30,314.63
Step by Step Solution
- Step 1: Write the proportion equation
75,613.75 : 113,420.64 = 20,209.75 : x - Step 2: Convert to fraction form
75,613.75/113,420.64 = 20,209.75/x - Step 3: Cross multiply
75,613.75x = 113,420.64 × 20,209.75 - Step 4: Simplify right side
75,613.75x = 2,292,202,779.24 - Step 5: Solve for x
x = 2,292,202,779.24/75,613.75 - Step 6: Final answer
x = 30,314.63
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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.