Finding the Fourth Proportional to 81,292.99, 121,978.36 and 28,727.23
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Solution
The fourth proportional to 81,292.99, 121,978.36 and 28,727.23 is: 43,104.58
Step by Step Solution
- Step 1: Write the proportion equation
81,292.99 : 121,978.36 = 28,727.23 : x - Step 2: Convert to fraction form
81,292.99/121,978.36 = 28,727.23/x - Step 3: Cross multiply
81,292.99x = 121,978.36 × 28,727.23 - Step 4: Simplify right side
81,292.99x = 3,504,100,402.74 - Step 5: Solve for x
x = 3,504,100,402.74/81,292.99 - Step 6: Final answer
x = 43,104.58
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.