Finding the Fourth Proportional to 81,605,841.68, 122,351,945.87 and 36,142,991.12
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Solution
The fourth proportional to 81,605,841.68, 122,351,945.87 and 36,142,991.12 is: 54,189,322.75
Step by Step Solution
- Step 1: Write the proportion equation
81,605,841.68 : 122,351,945.87 = 36,142,991.12 : x - Step 2: Convert to fraction form
81,605,841.68/122,351,945.87 = 36,142,991.12/x - Step 3: Cross multiply
81,605,841.68x = 122,351,945.87 × 36,142,991.12 - Step 4: Simplify right side
81,605,841.68x = 4,422,165,293,094,130.50 - Step 5: Solve for x
x = 4,422,165,293,094,130.50/81,605,841.68 - Step 6: Final answer
x = 54,189,322.75
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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.