Finding the Fourth Proportional to 86,555.34, 129,831.65 and 44,411.09
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Solution
The fourth proportional to 86,555.34, 129,831.65 and 44,411.09 is: 66,615.94
Step by Step Solution
- Step 1: Write the proportion equation
86,555.34 : 129,831.65 = 44,411.09 : x - Step 2: Convert to fraction form
86,555.34/129,831.65 = 44,411.09/x - Step 3: Cross multiply
86,555.34x = 129,831.65 × 44,411.09 - Step 4: Simplify right side
86,555.34x = 5,765,964,870.94 - Step 5: Solve for x
x = 5,765,964,870.94/86,555.34 - Step 6: Final answer
x = 66,615.94
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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.