Finding the Fourth Proportional to 87,598.08, 120,902.94 and 57,331.08
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Solution
The fourth proportional to 87,598.08, 120,902.94 and 57,331.08 is: 79,128.40
Step by Step Solution
- Step 1: Write the proportion equation
87,598.08 : 120,902.94 = 57,331.08 : x - Step 2: Convert to fraction form
87,598.08/120,902.94 = 57,331.08/x - Step 3: Cross multiply
87,598.08x = 120,902.94 × 57,331.08 - Step 4: Simplify right side
87,598.08x = 6,931,496,125.38 - Step 5: Solve for x
x = 6,931,496,125.38/87,598.08 - Step 6: Final answer
x = 79,128.40
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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.