Finding the Fourth Proportional to 68,666.90, 102,917.16 and 29,140.99
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Solution
The fourth proportional to 68,666.90, 102,917.16 and 29,140.99 is: 43,676.18
Step by Step Solution
- Step 1: Write the proportion equation
68,666.90 : 102,917.16 = 29,140.99 : x - Step 2: Convert to fraction form
68,666.90/102,917.16 = 29,140.99/x - Step 3: Cross multiply
68,666.90x = 102,917.16 × 29,140.99 - Step 4: Simplify right side
68,666.90x = 2,999,107,673.10 - Step 5: Solve for x
x = 2,999,107,673.10/68,666.90 - Step 6: Final answer
x = 43,676.18
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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.