Finding the Fourth Proportional to 80,739.40, 121,181.10 and 47,417.80
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Solution
The fourth proportional to 80,739.40, 121,181.10 and 47,417.80 is: 71,168.99
Step by Step Solution
- Step 1: Write the proportion equation
80,739.40 : 121,181.10 = 47,417.80 : x - Step 2: Convert to fraction form
80,739.40/121,181.10 = 47,417.80/x - Step 3: Cross multiply
80,739.40x = 121,181.10 × 47,417.80 - Step 4: Simplify right side
80,739.40x = 5,746,141,163.58 - Step 5: Solve for x
x = 5,746,141,163.58/80,739.40 - Step 6: Final answer
x = 71,168.99
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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.