Finding the Fourth Proportional to 83,969.99, 115,889.18 and 48,159.23
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Solution
The fourth proportional to 83,969.99, 115,889.18 and 48,159.23 is: 66,465.81
Step by Step Solution
- Step 1: Write the proportion equation
83,969.99 : 115,889.18 = 48,159.23 : x - Step 2: Convert to fraction form
83,969.99/115,889.18 = 48,159.23/x - Step 3: Cross multiply
83,969.99x = 115,889.18 × 48,159.23 - Step 4: Simplify right side
83,969.99x = 5,581,133,674.13 - Step 5: Solve for x
x = 5,581,133,674.13/83,969.99 - Step 6: Final answer
x = 66,465.81
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1.5x scale
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.