Finding the Fourth Proportional to 87,932.99, 121,252.95 and 86,087.81
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Solution
The fourth proportional to 87,932.99, 121,252.95 and 86,087.81 is: 118,708.59
Step by Step Solution
- Step 1: Write the proportion equation
87,932.99 : 121,252.95 = 86,087.81 : x - Step 2: Convert to fraction form
87,932.99/121,252.95 = 86,087.81/x - Step 3: Cross multiply
87,932.99x = 121,252.95 × 86,087.81 - Step 4: Simplify right side
87,932.99x = 10,438,401,224.67 - Step 5: Solve for x
x = 10,438,401,224.67/87,932.99 - Step 6: Final answer
x = 118,708.59
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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.