Finding the Fourth Proportional to 43,178,984.12, 64,786,378.26 and 18,905,382.20
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Solution
The fourth proportional to 43,178,984.12, 64,786,378.26 and 18,905,382.20 is: 28,365,911.50
Step by Step Solution
- Step 1: Write the proportion equation
43,178,984.12 : 64,786,378.26 = 18,905,382.20 : x - Step 2: Convert to fraction form
43,178,984.12/64,786,378.26 = 18,905,382.20/x - Step 3: Cross multiply
43,178,984.12x = 64,786,378.26 × 18,905,382.20 - Step 4: Simplify right side
43,178,984.12x = 1,224,811,242,359,071 - Step 5: Solve for x
x = 1,224,811,242,359,071/43,178,984.12 - Step 6: Final answer
x = 28,365,911.50
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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.