Finding the Fourth Proportional to 87,997.96, 121,438.76 and 47,713.08
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Solution
The fourth proportional to 87,997.96, 121,438.76 and 47,713.08 is: 65,844.90
Step by Step Solution
- Step 1: Write the proportion equation
87,997.96 : 121,438.76 = 47,713.08 : x - Step 2: Convert to fraction form
87,997.96/121,438.76 = 47,713.08/x - Step 3: Cross multiply
87,997.96x = 121,438.76 × 47,713.08 - Step 4: Simplify right side
87,997.96x = 5,794,217,270.98 - Step 5: Solve for x
x = 5,794,217,270.98/87,997.96 - Step 6: Final answer
x = 65,844.90
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1.5x scale
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.