Finding the Fourth Proportional to 87,749,523.21, 121,133,450.19 and 57,998,090.58
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Solution
The fourth proportional to 87,749,523.21, 121,133,450.19 and 57,998,090.58 is: 80,063,213.56
Step by Step Solution
- Step 1: Write the proportion equation
87,749,523.21 : 121,133,450.19 = 57,998,090.58 : x - Step 2: Convert to fraction form
87,749,523.21/121,133,450.19 = 57,998,090.58/x - Step 3: Cross multiply
87,749,523.21x = 121,133,450.19 × 57,998,090.58 - Step 4: Simplify right side
87,749,523.21x = 7,025,508,816,387,538 - Step 5: Solve for x
x = 7,025,508,816,387,538/87,749,523.21 - Step 6: Final answer
x = 80,063,213.56
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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.