Finding the Fourth Proportional to 69,072.89, 103,615.20 and 19,152.99
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Solution
The fourth proportional to 69,072.89, 103,615.20 and 19,152.99 is: 28,731.11
Step by Step Solution
- Step 1: Write the proportion equation
69,072.89 : 103,615.20 = 19,152.99 : x - Step 2: Convert to fraction form
69,072.89/103,615.20 = 19,152.99/x - Step 3: Cross multiply
69,072.89x = 103,615.20 × 19,152.99 - Step 4: Simplify right side
69,072.89x = 1,984,540,889.45 - Step 5: Solve for x
x = 1,984,540,889.45/69,072.89 - Step 6: Final answer
x = 28,731.11
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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.