Finding the Fourth Proportional to 61,272,688.80, 91,814,554.80 and 53,147,546.40
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Solution
The fourth proportional to 61,272,688.80, 91,814,554.80 and 53,147,546.40 is: 79,639,369.63
Step by Step Solution
- Step 1: Write the proportion equation
61,272,688.80 : 91,814,554.80 = 53,147,546.40 : x - Step 2: Convert to fraction form
61,272,688.80/91,814,554.80 = 53,147,546.40/x - Step 3: Cross multiply
61,272,688.80x = 91,814,554.80 × 53,147,546.40 - Step 4: Simplify right side
61,272,688.80x = 4,879,718,311,428,342 - Step 5: Solve for x
x = 4,879,718,311,428,342/61,272,688.80 - Step 6: Final answer
x = 79,639,369.63
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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.