Finding the Fourth Proportional to 84,122,425.20, 126,183,637.80 and 47,842,719.60
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Solution
The fourth proportional to 84,122,425.20, 126,183,637.80 and 47,842,719.60 is: 71,764,079.40
Step by Step Solution
- Step 1: Write the proportion equation
84,122,425.20 : 126,183,637.80 = 47,842,719.60 : x - Step 2: Convert to fraction form
84,122,425.20/126,183,637.80 = 47,842,719.60/x - Step 3: Cross multiply
84,122,425.20x = 126,183,637.80 × 47,842,719.60 - Step 4: Simplify right side
84,122,425.20x = 6,036,968,401,373,361 - Step 5: Solve for x
x = 6,036,968,401,373,361/84,122,425.20 - Step 6: Final answer
x = 71,764,079.40
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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.