Finding the Fourth Proportional to 87,762.42, 121,112.01 and 47,476.05
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Solution
The fourth proportional to 87,762.42, 121,112.01 and 47,476.05 is: 65,516.88
Step by Step Solution
- Step 1: Write the proportion equation
87,762.42 : 121,112.01 = 47,476.05 : x - Step 2: Convert to fraction form
87,762.42/121,112.01 = 47,476.05/x - Step 3: Cross multiply
87,762.42x = 121,112.01 × 47,476.05 - Step 4: Simplify right side
87,762.42x = 5,749,919,842.36 - Step 5: Solve for x
x = 5,749,919,842.36/87,762.42 - Step 6: Final answer
x = 65,516.88
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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.