Finding the Fourth Proportional to 68,661.21, 102,908.65 and 29,135.29
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Solution
The fourth proportional to 68,661.21, 102,908.65 and 29,135.29 is: 43,667.64
Step by Step Solution
- Step 1: Write the proportion equation
68,661.21 : 102,908.65 = 29,135.29 : x - Step 2: Convert to fraction form
68,661.21/102,908.65 = 29,135.29/x - Step 3: Cross multiply
68,661.21x = 102,908.65 × 29,135.29 - Step 4: Simplify right side
68,661.21x = 2,998,272,701.04 - Step 5: Solve for x
x = 2,998,272,701.04/68,661.21 - Step 6: Final answer
x = 43,667.64
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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.