Finding the Fourth Proportional to 57,267,986.99, 79,109,531.69 and 55,141,896.96
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Solution
The fourth proportional to 57,267,986.99, 79,109,531.69 and 55,141,896.96 is: 76,172,568.21
Step by Step Solution
- Step 1: Write the proportion equation
57,267,986.99 : 79,109,531.69 = 55,141,896.96 : x - Step 2: Convert to fraction form
57,267,986.99/79,109,531.69 = 55,141,896.96/x - Step 3: Cross multiply
57,267,986.99x = 79,109,531.69 × 55,141,896.96 - Step 4: Simplify right side
57,267,986.99x = 4,362,249,644,728,125.50 - Step 5: Solve for x
x = 4,362,249,644,728,125.50/57,267,986.99 - Step 6: Final answer
x = 76,172,568.21
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.