Finding the Fourth Proportional to 68,659.36, 102,923.16 and 21,881.68
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Solution
The fourth proportional to 68,659.36, 102,923.16 and 21,881.68 is: 32,801.52
Step by Step Solution
- Step 1: Write the proportion equation
68,659.36 : 102,923.16 = 21,881.68 : x - Step 2: Convert to fraction form
68,659.36/102,923.16 = 21,881.68/x - Step 3: Cross multiply
68,659.36x = 102,923.16 × 21,881.68 - Step 4: Simplify right side
68,659.36x = 2,252,131,651.71 - Step 5: Solve for x
x = 2,252,131,651.71/68,659.36 - Step 6: Final answer
x = 32,801.52
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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.