Finding the Fourth Proportional to 69,639.36, 104,445.68 and 19,707.40
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Solution
The fourth proportional to 69,639.36, 104,445.68 and 19,707.40 is: 29,557.32
Step by Step Solution
- Step 1: Write the proportion equation
69,639.36 : 104,445.68 = 19,707.40 : x - Step 2: Convert to fraction form
69,639.36/104,445.68 = 19,707.40/x - Step 3: Cross multiply
69,639.36x = 104,445.68 × 19,707.40 - Step 4: Simplify right side
69,639.36x = 2,058,352,794.03 - Step 5: Solve for x
x = 2,058,352,794.03/69,639.36 - Step 6: Final answer
x = 29,557.32
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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.