Finding the Fourth Proportional to 81,745,059.36, 122,620,485.84 and 20,334,538.08
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Solution
The fourth proportional to 81,745,059.36, 122,620,485.84 and 20,334,538.08 is: 30,502,527.72
Step by Step Solution
- Step 1: Write the proportion equation
81,745,059.36 : 122,620,485.84 = 20,334,538.08 : x - Step 2: Convert to fraction form
81,745,059.36/122,620,485.84 = 20,334,538.08/x - Step 3: Cross multiply
81,745,059.36x = 122,620,485.84 × 20,334,538.08 - Step 4: Simplify right side
81,745,059.36x = 2,493,430,938,701,580.50 - Step 5: Solve for x
x = 2,493,430,938,701,580.50/81,745,059.36 - Step 6: Final answer
x = 30,502,527.72
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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.