Finding the Fourth Proportional to 81,932,288.48, 122,869,972.56 and 45,596,129.12
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Solution
The fourth proportional to 81,932,288.48, 122,869,972.56 and 45,596,129.12 is: 68,378,355.32
Step by Step Solution
- Step 1: Write the proportion equation
81,932,288.48 : 122,869,972.56 = 45,596,129.12 : x - Step 2: Convert to fraction form
81,932,288.48/122,869,972.56 = 45,596,129.12/x - Step 3: Cross multiply
81,932,288.48x = 122,869,972.56 × 45,596,129.12 - Step 4: Simplify right side
81,932,288.48x = 5,602,395,133,816,617 - Step 5: Solve for x
x = 5,602,395,133,816,617/81,932,288.48 - Step 6: Final answer
x = 68,378,355.32
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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.