Finding the Fourth Proportional to 86,623.80, 129,935.70 and 86,623.80
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Solution
The fourth proportional to 86,623.80, 129,935.70 and 86,623.80 is: 129,935.70
Step by Step Solution
- Step 1: Write the proportion equation
86,623.80 : 129,935.70 = 86,623.80 : x - Step 2: Convert to fraction form
86,623.80/129,935.70 = 86,623.80/x - Step 3: Cross multiply
86,623.80x = 129,935.70 × 86,623.80 - Step 4: Simplify right side
86,623.80x = 11,255,524,089.66 - Step 5: Solve for x
x = 11,255,524,089.66/86,623.80 - Step 6: Final answer
x = 129,935.70
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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.