Finding the Fourth Proportional to 80,777.12, 121,165.74 and 38,647.26
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Solution
The fourth proportional to 80,777.12, 121,165.74 and 38,647.26 is: 57,970.92
Step by Step Solution
- Step 1: Write the proportion equation
80,777.12 : 121,165.74 = 38,647.26 : x - Step 2: Convert to fraction form
80,777.12/121,165.74 = 38,647.26/x - Step 3: Cross multiply
80,777.12x = 121,165.74 × 38,647.26 - Step 4: Simplify right side
80,777.12x = 4,682,723,856.87 - Step 5: Solve for x
x = 4,682,723,856.87/80,777.12 - Step 6: Final answer
x = 57,970.92
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.