Finding the Fourth Proportional to 80,876,621.80, 121,314,932.70 and 26,289,101.80
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Solution
The fourth proportional to 80,876,621.80, 121,314,932.70 and 26,289,101.80 is: 39,433,652.70
Step by Step Solution
- Step 1: Write the proportion equation
80,876,621.80 : 121,314,932.70 = 26,289,101.80 : x - Step 2: Convert to fraction form
80,876,621.80/121,314,932.70 = 26,289,101.80/x - Step 3: Cross multiply
80,876,621.80x = 121,314,932.70 × 26,289,101.80 - Step 4: Simplify right side
80,876,621.80x = 3,189,260,615,610,449 - Step 5: Solve for x
x = 3,189,260,615,610,449/80,876,621.80 - Step 6: Final answer
x = 39,433,652.70
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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.