Finding the Fourth Proportional to 31,977,912.96, 44,128,419.84 and 18,231,304.32
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Solution
The fourth proportional to 31,977,912.96, 44,128,419.84 and 18,231,304.32 is: 25,158,572.80
Step by Step Solution
- Step 1: Write the proportion equation
31,977,912.96 : 44,128,419.84 = 18,231,304.32 : x - Step 2: Convert to fraction form
31,977,912.96/44,128,419.84 = 18,231,304.32/x - Step 3: Cross multiply
31,977,912.96x = 44,128,419.84 × 18,231,304.32 - Step 4: Simplify right side
31,977,912.96x = 804,518,651,263,765.75 - Step 5: Solve for x
x = 804,518,651,263,765.75/31,977,912.96 - Step 6: Final answer
x = 25,158,572.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.