Finding the Fourth Proportional to 84,325.20, 126,487.80 and 21,995.70
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Solution
The fourth proportional to 84,325.20, 126,487.80 and 21,995.70 is: 32,993.55
Step by Step Solution
- Step 1: Write the proportion equation
84,325.20 : 126,487.80 = 21,995.70 : x - Step 2: Convert to fraction form
84,325.20/126,487.80 = 21,995.70/x - Step 3: Cross multiply
84,325.20x = 126,487.80 × 21,995.70 - Step 4: Simplify right side
84,325.20x = 2,782,187,702.46 - Step 5: Solve for x
x = 2,782,187,702.46/84,325.20 - Step 6: Final answer
x = 32,993.55
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Double scale
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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.