Finding the Fourth Proportional to 87,217.38, 120,373.14 and 53,245.68
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Solution
The fourth proportional to 87,217.38, 120,373.14 and 53,245.68 is: 73,487.07
Step by Step Solution
- Step 1: Write the proportion equation
87,217.38 : 120,373.14 = 53,245.68 : x - Step 2: Convert to fraction form
87,217.38/120,373.14 = 53,245.68/x - Step 3: Cross multiply
87,217.38x = 120,373.14 × 53,245.68 - Step 4: Simplify right side
87,217.38x = 6,409,349,693.04 - Step 5: Solve for x
x = 6,409,349,693.04/87,217.38 - Step 6: Final answer
x = 73,487.07
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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.