Finding the Fourth Proportional to 87,745.79, 121,081.11 and 53,738.75
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Solution
The fourth proportional to 87,745.79, 121,081.11 and 53,738.75 is: 74,154.53
Step by Step Solution
- Step 1: Write the proportion equation
87,745.79 : 121,081.11 = 53,738.75 : x - Step 2: Convert to fraction form
87,745.79/121,081.11 = 53,738.75/x - Step 3: Cross multiply
87,745.79x = 121,081.11 × 53,738.75 - Step 4: Simplify right side
87,745.79x = 6,506,747,500.01 - Step 5: Solve for x
x = 6,506,747,500.01/87,745.79 - Step 6: Final answer
x = 74,154.53
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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.