Finding the Fourth Proportional to 80,789.78, 121,122.23 and 40,788.18
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Solution
The fourth proportional to 80,789.78, 121,122.23 and 40,788.18 is: 61,150.75
Step by Step Solution
- Step 1: Write the proportion equation
80,789.78 : 121,122.23 = 40,788.18 : x - Step 2: Convert to fraction form
80,789.78/121,122.23 = 40,788.18/x - Step 3: Cross multiply
80,789.78x = 121,122.23 × 40,788.18 - Step 4: Simplify right side
80,789.78x = 4,940,355,421.21 - Step 5: Solve for x
x = 4,940,355,421.21/80,789.78 - Step 6: Final answer
x = 61,150.75
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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.