Finding the Fourth Proportional to 90,829.05, 136,197.99 and 57,615.81
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Solution
The fourth proportional to 90,829.05, 136,197.99 and 57,615.81 is: 86,394.80
Step by Step Solution
- Step 1: Write the proportion equation
90,829.05 : 136,197.99 = 57,615.81 : x - Step 2: Convert to fraction form
90,829.05/136,197.99 = 57,615.81/x - Step 3: Cross multiply
90,829.05x = 136,197.99 × 57,615.81 - Step 4: Simplify right side
90,829.05x = 7,847,157,514.22 - Step 5: Solve for x
x = 7,847,157,514.22/90,829.05 - Step 6: Final answer
x = 86,394.80
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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.