Finding the Fourth Proportional to 18,742,771.62, 28,117,991.93 and 6,445,137.80
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Solution
The fourth proportional to 18,742,771.62, 28,117,991.93 and 6,445,137.80 is: 9,669,025.27
Step by Step Solution
- Step 1: Write the proportion equation
18,742,771.62 : 28,117,991.93 = 6,445,137.80 : x - Step 2: Convert to fraction form
18,742,771.62/28,117,991.93 = 6,445,137.80/x - Step 3: Cross multiply
18,742,771.62x = 28,117,991.93 × 6,445,137.80 - Step 4: Simplify right side
18,742,771.62x = 181,224,332,475,322.31 - Step 5: Solve for x
x = 181,224,332,475,322.31/18,742,771.62 - Step 6: Final answer
x = 9,669,025.27
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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.