Finding the Fourth Proportional to 20,478,450.64, 30,722,257.68 and 7,699,066.08
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Solution
The fourth proportional to 20,478,450.64, 30,722,257.68 and 7,699,066.08 is: 11,550,321.66
Step by Step Solution
- Step 1: Write the proportion equation
20,478,450.64 : 30,722,257.68 = 7,699,066.08 : x - Step 2: Convert to fraction form
20,478,450.64/30,722,257.68 = 7,699,066.08/x - Step 3: Cross multiply
20,478,450.64x = 30,722,257.68 × 7,699,066.08 - Step 4: Simplify right side
20,478,450.64x = 236,532,692,005,107.50 - Step 5: Solve for x
x = 236,532,692,005,107.50/20,478,450.64 - Step 6: Final answer
x = 11,550,321.66
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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.