Finding the Fourth Proportional to 87,739.05, 121,079.88 and 47,452.81
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Solution
The fourth proportional to 87,739.05, 121,079.88 and 47,452.81 is: 65,484.87
Step by Step Solution
- Step 1: Write the proportion equation
87,739.05 : 121,079.88 = 47,452.81 : x - Step 2: Convert to fraction form
87,739.05/121,079.88 = 47,452.81/x - Step 3: Cross multiply
87,739.05x = 121,079.88 × 47,452.81 - Step 4: Simplify right side
87,739.05x = 5,745,580,237.76 - Step 5: Solve for x
x = 5,745,580,237.76/87,739.05 - Step 6: Final answer
x = 65,484.87
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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.