Finding the Fourth Proportional to 69,121.41, 103,669.56 and 19,188.96
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Solution
The fourth proportional to 69,121.41, 103,669.56 and 19,188.96 is: 28,779.95
Step by Step Solution
- Step 1: Write the proportion equation
69,121.41 : 103,669.56 = 19,188.96 : x - Step 2: Convert to fraction form
69,121.41/103,669.56 = 19,188.96/x - Step 3: Cross multiply
69,121.41x = 103,669.56 × 19,188.96 - Step 4: Simplify right side
69,121.41x = 1,989,311,040.06 - Step 5: Solve for x
x = 1,989,311,040.06/69,121.41 - Step 6: Final answer
x = 28,779.95
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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.