Finding the Fourth Proportional to 68,721.54, 102,985.10 and 29,238.90
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Solution
The fourth proportional to 68,721.54, 102,985.10 and 29,238.90 is: 43,816.99
Step by Step Solution
- Step 1: Write the proportion equation
68,721.54 : 102,985.10 = 29,238.90 : x - Step 2: Convert to fraction form
68,721.54/102,985.10 = 29,238.90/x - Step 3: Cross multiply
68,721.54x = 102,985.10 × 29,238.90 - Step 4: Simplify right side
68,721.54x = 3,011,171,040.39 - Step 5: Solve for x
x = 3,011,171,040.39/68,721.54 - Step 6: Final answer
x = 43,816.99
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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.