Finding the Fourth Proportional to 81,605,840.68, 122,351,944.37 and 36,142,990.12
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Solution
The fourth proportional to 81,605,840.68, 122,351,944.37 and 36,142,990.12 is: 54,189,321.25
Step by Step Solution
- Step 1: Write the proportion equation
81,605,840.68 : 122,351,944.37 = 36,142,990.12 : x - Step 2: Convert to fraction form
81,605,840.68/122,351,944.37 = 36,142,990.12/x - Step 3: Cross multiply
81,605,840.68x = 122,351,944.37 × 36,142,990.12 - Step 4: Simplify right side
81,605,840.68x = 4,422,165,115,915,940.50 - Step 5: Solve for x
x = 4,422,165,115,915,940.50/81,605,840.68 - Step 6: Final answer
x = 54,189,321.25
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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.