Finding the Fourth Proportional to 81,800.93, 112,884.05 and 45,990.99
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Solution
The fourth proportional to 81,800.93, 112,884.05 and 45,990.99 is: 63,466.87
Step by Step Solution
- Step 1: Write the proportion equation
81,800.93 : 112,884.05 = 45,990.99 : x - Step 2: Convert to fraction form
81,800.93/112,884.05 = 45,990.99/x - Step 3: Cross multiply
81,800.93x = 112,884.05 × 45,990.99 - Step 4: Simplify right side
81,800.93x = 5,191,649,329.69 - Step 5: Solve for x
x = 5,191,649,329.69/81,800.93 - Step 6: Final answer
x = 63,466.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.