Finding the Fourth Proportional to 87,242.18, 120,385.70 and 48,993.02
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Solution
The fourth proportional to 87,242.18, 120,385.70 and 48,993.02 is: 67,605.60
Step by Step Solution
- Step 1: Write the proportion equation
87,242.18 : 120,385.70 = 48,993.02 : x - Step 2: Convert to fraction form
87,242.18/120,385.70 = 48,993.02/x - Step 3: Cross multiply
87,242.18x = 120,385.70 × 48,993.02 - Step 4: Simplify right side
87,242.18x = 5,898,059,473.26 - Step 5: Solve for x
x = 5,898,059,473.26/87,242.18 - Step 6: Final answer
x = 67,605.60
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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.