Finding the Fourth Proportional to 81,686,896.99, 122,556,247.80 and 29,163,441.58
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Solution
The fourth proportional to 81,686,896.99, 122,556,247.80 and 29,163,441.58 is: 43,754,409.88
Step by Step Solution
- Step 1: Write the proportion equation
81,686,896.99 : 122,556,247.80 = 29,163,441.58 : x - Step 2: Convert to fraction form
81,686,896.99/122,556,247.80 = 29,163,441.58/x - Step 3: Cross multiply
81,686,896.99x = 122,556,247.80 × 29,163,441.58 - Step 4: Simplify right side
81,686,896.99x = 3,574,161,972,979,303 - Step 5: Solve for x
x = 3,574,161,972,979,303/81,686,896.99 - Step 6: Final answer
x = 43,754,409.88
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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.