Finding the Fourth Proportional to 55,188,136.20, 82,782,204.30 and 18,784,427.70
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Solution
The fourth proportional to 55,188,136.20, 82,782,204.30 and 18,784,427.70 is: 28,176,641.55
Step by Step Solution
- Step 1: Write the proportion equation
55,188,136.20 : 82,782,204.30 = 18,784,427.70 : x - Step 2: Convert to fraction form
55,188,136.20/82,782,204.30 = 18,784,427.70/x - Step 3: Cross multiply
55,188,136.20x = 82,782,204.30 × 18,784,427.70 - Step 4: Simplify right side
55,188,136.20x = 1,555,016,331,519,979 - Step 5: Solve for x
x = 1,555,016,331,519,979/55,188,136.20 - Step 6: Final answer
x = 28,176,641.55
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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.