Finding the Fourth Proportional to 69,993.99, 105,034.52 and 28,440.99
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Solution
The fourth proportional to 69,993.99, 105,034.52 and 28,440.99 is: 42,679.17
Step by Step Solution
- Step 1: Write the proportion equation
69,993.99 : 105,034.52 = 28,440.99 : x - Step 2: Convert to fraction form
69,993.99/105,034.52 = 28,440.99/x - Step 3: Cross multiply
69,993.99x = 105,034.52 × 28,440.99 - Step 4: Simplify right side
69,993.99x = 2,987,285,590.77 - Step 5: Solve for x
x = 2,987,285,590.77/69,993.99 - Step 6: Final answer
x = 42,679.17
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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.