Finding the Fourth Proportional to 89,656.84, 123,684.87 and 57,835.99
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Solution
The fourth proportional to 89,656.84, 123,684.87 and 57,835.99 is: 79,786.85
Step by Step Solution
- Step 1: Write the proportion equation
89,656.84 : 123,684.87 = 57,835.99 : x - Step 2: Convert to fraction form
89,656.84/123,684.87 = 57,835.99/x - Step 3: Cross multiply
89,656.84x = 123,684.87 × 57,835.99 - Step 4: Simplify right side
89,656.84x = 7,153,436,286.05 - Step 5: Solve for x
x = 7,153,436,286.05/89,656.84 - Step 6: Final answer
x = 79,786.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.