Finding the Fourth Proportional to 87,478.18, 120,777.99 and 67,299.46
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Solution
The fourth proportional to 87,478.18, 120,777.99 and 67,299.46 is: 92,917.95
Step by Step Solution
- Step 1: Write the proportion equation
87,478.18 : 120,777.99 = 67,299.46 : x - Step 2: Convert to fraction form
87,478.18/120,777.99 = 67,299.46/x - Step 3: Cross multiply
87,478.18x = 120,777.99 × 67,299.46 - Step 4: Simplify right side
87,478.18x = 8,128,292,952.57 - Step 5: Solve for x
x = 8,128,292,952.57/87,478.18 - Step 6: Final answer
x = 92,917.95
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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.