Finding the Fourth Proportional to 81,525,623.91, 122,299,791.52 and 26,195,123.97
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Solution
The fourth proportional to 81,525,623.91, 122,299,791.52 and 26,195,123.97 is: 39,296,334.65
Step by Step Solution
- Step 1: Write the proportion equation
81,525,623.91 : 122,299,791.52 = 26,195,123.97 : x - Step 2: Convert to fraction form
81,525,623.91/122,299,791.52 = 26,195,123.97/x - Step 3: Cross multiply
81,525,623.91x = 122,299,791.52 × 26,195,123.97 - Step 4: Simplify right side
81,525,623.91x = 3,203,658,200,011,145 - Step 5: Solve for x
x = 3,203,658,200,011,145/81,525,623.91 - Step 6: Final answer
x = 39,296,334.65
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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.