Finding the Fourth Proportional to 87,707.17, 121,035.87 and 47,420.94
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Solution
The fourth proportional to 87,707.17, 121,035.87 and 47,420.94 is: 65,440.89
Step by Step Solution
- Step 1: Write the proportion equation
87,707.17 : 121,035.87 = 47,420.94 : x - Step 2: Convert to fraction form
87,707.17/121,035.87 = 47,420.94/x - Step 3: Cross multiply
87,707.17x = 121,035.87 × 47,420.94 - Step 4: Simplify right side
87,707.17x = 5,739,635,183.00 - Step 5: Solve for x
x = 5,739,635,183.00/87,707.17 - Step 6: Final answer
x = 65,440.89
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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.