Finding the Fourth Proportional to 87,811.92, 121,182.36 and 51,988.92
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Solution
The fourth proportional to 87,811.92, 121,182.36 and 51,988.92 is: 71,745.84
Step by Step Solution
- Step 1: Write the proportion equation
87,811.92 : 121,182.36 = 51,988.92 : x - Step 2: Convert to fraction form
87,811.92/121,182.36 = 51,988.92/x - Step 3: Cross multiply
87,811.92x = 121,182.36 × 51,988.92 - Step 4: Simplify right side
87,811.92x = 6,300,140,019.45 - Step 5: Solve for x
x = 6,300,140,019.45/87,811.92 - Step 6: Final answer
x = 71,745.84
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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.