Finding the Fourth Proportional to 87,823.09, 121,265.73 and 81,106.26
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Solution
The fourth proportional to 87,823.09, 121,265.73 and 81,106.26 is: 111,991.17
Step by Step Solution
- Step 1: Write the proportion equation
87,823.09 : 121,265.73 = 81,106.26 : x - Step 2: Convert to fraction form
87,823.09/121,265.73 = 81,106.26/x - Step 3: Cross multiply
87,823.09x = 121,265.73 × 81,106.26 - Step 4: Simplify right side
87,823.09x = 9,835,410,281.95 - Step 5: Solve for x
x = 9,835,410,281.95/87,823.09 - Step 6: Final answer
x = 111,991.17
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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.