Finding the Fourth Proportional to 87,415.81, 120,652.92 and 55,578.49
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Solution
The fourth proportional to 87,415.81, 120,652.92 and 55,578.49 is: 76,710.46
Step by Step Solution
- Step 1: Write the proportion equation
87,415.81 : 120,652.92 = 55,578.49 : x - Step 2: Convert to fraction form
87,415.81/120,652.92 = 55,578.49/x - Step 3: Cross multiply
87,415.81x = 120,652.92 × 55,578.49 - Step 4: Simplify right side
87,415.81x = 6,705,706,226.53 - Step 5: Solve for x
x = 6,705,706,226.53/87,415.81 - Step 6: Final answer
x = 76,710.46
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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.