Finding the Fourth Proportional to 81,559,936.80, 122,339,905.20 and 27,707,248.80
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Solution
The fourth proportional to 81,559,936.80, 122,339,905.20 and 27,707,248.80 is: 41,560,873.20
Step by Step Solution
- Step 1: Write the proportion equation
81,559,936.80 : 122,339,905.20 = 27,707,248.80 : x - Step 2: Convert to fraction form
81,559,936.80/122,339,905.20 = 27,707,248.80/x - Step 3: Cross multiply
81,559,936.80x = 122,339,905.20 × 27,707,248.80 - Step 4: Simplify right side
81,559,936.80x = 3,389,702,191,544,814 - Step 5: Solve for x
x = 3,389,702,191,544,814/81,559,936.80 - Step 6: Final answer
x = 41,560,873.20
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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.