Finding the Fourth Proportional to 90,930.84, 125,488.47 and 50,644.62
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Solution
The fourth proportional to 90,930.84, 125,488.47 and 50,644.62 is: 69,891.75
Step by Step Solution
- Step 1: Write the proportion equation
90,930.84 : 125,488.47 = 50,644.62 : x - Step 2: Convert to fraction form
90,930.84/125,488.47 = 50,644.62/x - Step 3: Cross multiply
90,930.84x = 125,488.47 × 50,644.62 - Step 4: Simplify right side
90,930.84x = 6,355,315,877.53 - Step 5: Solve for x
x = 6,355,315,877.53/90,930.84 - Step 6: Final answer
x = 69,891.75
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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.