Finding the Fourth Proportional to 86,855.14, 130,107.99 and 65,831.14
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Solution
The fourth proportional to 86,855.14, 130,107.99 and 65,831.14 is: 98,614.28
Step by Step Solution
- Step 1: Write the proportion equation
86,855.14 : 130,107.99 = 65,831.14 : x - Step 2: Convert to fraction form
86,855.14/130,107.99 = 65,831.14/x - Step 3: Cross multiply
86,855.14x = 130,107.99 × 65,831.14 - Step 4: Simplify right side
86,855.14x = 8,565,157,304.81 - Step 5: Solve for x
x = 8,565,157,304.81/86,855.14 - Step 6: Final answer
x = 98,614.28
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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.