Finding the Fourth Proportional to 83,439.36, 115,149.12 and 45,713.28
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Solution
The fourth proportional to 83,439.36, 115,149.12 and 45,713.28 is: 63,085.86
Step by Step Solution
- Step 1: Write the proportion equation
83,439.36 : 115,149.12 = 45,713.28 : x - Step 2: Convert to fraction form
83,439.36/115,149.12 = 45,713.28/x - Step 3: Cross multiply
83,439.36x = 115,149.12 × 45,713.28 - Step 4: Simplify right side
83,439.36x = 5,263,843,964.31 - Step 5: Solve for x
x = 5,263,843,964.31/83,439.36 - Step 6: Final answer
x = 63,085.86
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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.