Finding the Fourth Proportional to 87,617.19, 120,911.65 and 47,330.95
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Solution
The fourth proportional to 87,617.19, 120,911.65 and 47,330.95 is: 65,316.66
Step by Step Solution
- Step 1: Write the proportion equation
87,617.19 : 120,911.65 = 47,330.95 : x - Step 2: Convert to fraction form
87,617.19/120,911.65 = 47,330.95/x - Step 3: Cross multiply
87,617.19x = 120,911.65 × 47,330.95 - Step 4: Simplify right side
87,617.19x = 5,722,862,623.13 - Step 5: Solve for x
x = 5,722,862,623.13/87,617.19 - Step 6: Final answer
x = 65,316.66
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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.