Finding the Fourth Proportional to 81,163.13, 121,788.30 and 39,610.13
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Solution
The fourth proportional to 81,163.13, 121,788.30 and 39,610.13 is: 59,436.48
Step by Step Solution
- Step 1: Write the proportion equation
81,163.13 : 121,788.30 = 39,610.13 : x - Step 2: Convert to fraction form
81,163.13/121,788.30 = 39,610.13/x - Step 3: Cross multiply
81,163.13x = 121,788.30 × 39,610.13 - Step 4: Simplify right side
81,163.13x = 4,824,050,395.48 - Step 5: Solve for x
x = 4,824,050,395.48/81,163.13 - Step 6: Final answer
x = 59,436.48
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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.