Finding the Fourth Proportional to 87,116.99, 120,177.18 and 56,919.99
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Solution
The fourth proportional to 87,116.99, 120,177.18 and 56,919.99 is: 78,520.66
Step by Step Solution
- Step 1: Write the proportion equation
87,116.99 : 120,177.18 = 56,919.99 : x - Step 2: Convert to fraction form
87,116.99/120,177.18 = 56,919.99/x - Step 3: Cross multiply
87,116.99x = 120,177.18 × 56,919.99 - Step 4: Simplify right side
87,116.99x = 6,840,483,883.83 - Step 5: Solve for x
x = 6,840,483,883.83/87,116.99 - Step 6: Final answer
x = 78,520.66
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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.