Finding the Fourth Proportional to 67,890.31, 101,802.54 and 39,819.53
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Solution
The fourth proportional to 67,890.31, 101,802.54 and 39,819.53 is: 59,709.99
Step by Step Solution
- Step 1: Write the proportion equation
67,890.31 : 101,802.54 = 39,819.53 : x - Step 2: Convert to fraction form
67,890.31/101,802.54 = 39,819.53/x - Step 3: Cross multiply
67,890.31x = 101,802.54 × 39,819.53 - Step 4: Simplify right side
67,890.31x = 4,053,729,699.44 - Step 5: Solve for x
x = 4,053,729,699.44/67,890.31 - Step 6: Final answer
x = 59,709.99
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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.