Finding the Fourth Proportional to 83,434.02, 115,139.07 and 45,193.99
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Solution
The fourth proportional to 83,434.02, 115,139.07 and 45,193.99 is: 62,367.77
Step by Step Solution
- Step 1: Write the proportion equation
83,434.02 : 115,139.07 = 45,193.99 : x - Step 2: Convert to fraction form
83,434.02/115,139.07 = 45,193.99/x - Step 3: Cross multiply
83,434.02x = 115,139.07 × 45,193.99 - Step 4: Simplify right side
83,434.02x = 5,203,593,978.19 - Step 5: Solve for x
x = 5,203,593,978.19/83,434.02 - Step 6: Final answer
x = 62,367.77
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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.