Finding the Fourth Proportional to 86,831.20, 130,246.80 and 27,671.20
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Solution
The fourth proportional to 86,831.20, 130,246.80 and 27,671.20 is: 41,506.80
Step by Step Solution
- Step 1: Write the proportion equation
86,831.20 : 130,246.80 = 27,671.20 : x - Step 2: Convert to fraction form
86,831.20/130,246.80 = 27,671.20/x - Step 3: Cross multiply
86,831.20x = 130,246.80 × 27,671.20 - Step 4: Simplify right side
86,831.20x = 3,604,085,252.16 - Step 5: Solve for x
x = 3,604,085,252.16/86,831.20 - Step 6: Final answer
x = 41,506.80
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1.5x scale
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.