Finding the Fourth Proportional to 97,239.80, 145,859.70 and 57,217.70
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Solution
The fourth proportional to 97,239.80, 145,859.70 and 57,217.70 is: 85,826.55
Step by Step Solution
- Step 1: Write the proportion equation
97,239.80 : 145,859.70 = 57,217.70 : x - Step 2: Convert to fraction form
97,239.80/145,859.70 = 57,217.70/x - Step 3: Cross multiply
97,239.80x = 145,859.70 × 57,217.70 - Step 4: Simplify right side
97,239.80x = 8,345,756,556.69 - Step 5: Solve for x
x = 8,345,756,556.69/97,239.80 - Step 6: Final answer
x = 85,826.55
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Similar ratio
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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.