Finding the Fourth Proportional to 81,342.36, 112,246.92 and 45,532.08
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Solution
The fourth proportional to 81,342.36, 112,246.92 and 45,532.08 is: 62,831.17
Step by Step Solution
- Step 1: Write the proportion equation
81,342.36 : 112,246.92 = 45,532.08 : x - Step 2: Convert to fraction form
81,342.36/112,246.92 = 45,532.08/x - Step 3: Cross multiply
81,342.36x = 112,246.92 × 45,532.08 - Step 4: Simplify right side
81,342.36x = 5,110,835,741.19 - Step 5: Solve for x
x = 5,110,835,741.19/81,342.36 - Step 6: Final answer
x = 62,831.17
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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.