Finding the Fourth Proportional to 73,831.16, 110,742.86 and 21,238.58
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Solution
The fourth proportional to 73,831.16, 110,742.86 and 21,238.58 is: 31,856.75
Step by Step Solution
- Step 1: Write the proportion equation
73,831.16 : 110,742.86 = 21,238.58 : x - Step 2: Convert to fraction form
73,831.16/110,742.86 = 21,238.58/x - Step 3: Cross multiply
73,831.16x = 110,742.86 × 21,238.58 - Step 4: Simplify right side
73,831.16x = 2,352,021,091.54 - Step 5: Solve for x
x = 2,352,021,091.54/73,831.16 - Step 6: Final answer
x = 31,856.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.