Finding the Fourth Proportional to 81,256,518.05, 121,859,173.78 and 26,656,380.42
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Solution
The fourth proportional to 81,256,518.05, 121,859,173.78 and 26,656,380.42 is: 39,976,171.41
Step by Step Solution
- Step 1: Write the proportion equation
81,256,518.05 : 121,859,173.78 = 26,656,380.42 : x - Step 2: Convert to fraction form
81,256,518.05/121,859,173.78 = 26,656,380.42/x - Step 3: Cross multiply
81,256,518.05x = 121,859,173.78 × 26,656,380.42 - Step 4: Simplify right side
81,256,518.05x = 3,248,324,493,879,928.50 - Step 5: Solve for x
x = 3,248,324,493,879,928.50/81,256,518.05 - Step 6: Final answer
x = 39,976,171.41
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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.