Finding the Fourth Proportional to 89,409.79, 123,439.70 and 59,220.99
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Solution
The fourth proportional to 89,409.79, 123,439.70 and 59,220.99 is: 81,760.86
Step by Step Solution
- Step 1: Write the proportion equation
89,409.79 : 123,439.70 = 59,220.99 : x - Step 2: Convert to fraction form
89,409.79/123,439.70 = 59,220.99/x - Step 3: Cross multiply
89,409.79x = 123,439.70 × 59,220.99 - Step 4: Simplify right side
89,409.79x = 7,310,221,054.24 - Step 5: Solve for x
x = 7,310,221,054.24/89,409.79 - Step 6: Final answer
x = 81,760.86
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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.