Finding the Fourth Proportional to 71,787.60, 107,914.68 and 71,437.68
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Solution
The fourth proportional to 71,787.60, 107,914.68 and 71,437.68 is: 107,388.66
Step by Step Solution
- Step 1: Write the proportion equation
71,787.60 : 107,914.68 = 71,437.68 : x - Step 2: Convert to fraction form
71,787.60/107,914.68 = 71,437.68/x - Step 3: Cross multiply
71,787.60x = 107,914.68 × 71,437.68 - Step 4: Simplify right side
71,787.60x = 7,709,174,377.14 - Step 5: Solve for x
x = 7,709,174,377.14/71,787.60 - Step 6: Final answer
x = 107,388.66
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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.