Finding the Fourth Proportional to 69,857.60, 104,787.36 and 19,937.68
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Solution
The fourth proportional to 69,857.60, 104,787.36 and 19,937.68 is: 29,906.79
Step by Step Solution
- Step 1: Write the proportion equation
69,857.60 : 104,787.36 = 19,937.68 : x - Step 2: Convert to fraction form
69,857.60/104,787.36 = 19,937.68/x - Step 3: Cross multiply
69,857.60x = 104,787.36 × 19,937.68 - Step 4: Simplify right side
69,857.60x = 2,089,216,851.72 - Step 5: Solve for x
x = 2,089,216,851.72/69,857.60 - Step 6: Final answer
x = 29,906.79
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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.