Finding the Fourth Proportional to 83,961.36, 115,669.59 and 58,423.81
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Solution
The fourth proportional to 83,961.36, 115,669.59 and 58,423.81 is: 80,487.72
Step by Step Solution
- Step 1: Write the proportion equation
83,961.36 : 115,669.59 = 58,423.81 : x - Step 2: Convert to fraction form
83,961.36/115,669.59 = 58,423.81/x - Step 3: Cross multiply
83,961.36x = 115,669.59 × 58,423.81 - Step 4: Simplify right side
83,961.36x = 6,757,858,025.19 - Step 5: Solve for x
x = 6,757,858,025.19/83,961.36 - Step 6: Final answer
x = 80,487.72
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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.