Finding the Fourth Proportional to 30,618,743.99, 45,867,975.44 and 20,212,256.90
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Solution
The fourth proportional to 30,618,743.99, 45,867,975.44 and 20,212,256.90 is: 30,278,684.96
Step by Step Solution
- Step 1: Write the proportion equation
30,618,743.99 : 45,867,975.44 = 20,212,256.90 : x - Step 2: Convert to fraction form
30,618,743.99/45,867,975.44 = 20,212,256.90/x - Step 3: Cross multiply
30,618,743.99x = 45,867,975.44 × 20,212,256.90 - Step 4: Simplify right side
30,618,743.99x = 927,095,303,089,779.25 - Step 5: Solve for x
x = 927,095,303,089,779.25/30,618,743.99 - Step 6: Final answer
x = 30,278,684.96
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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.