Finding the Fourth Proportional to 139,806.24, 209,710.72 and 39,965.74
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Solution
The fourth proportional to 139,806.24, 209,710.72 and 39,965.74 is: 59,949.00
Step by Step Solution
- Step 1: Write the proportion equation
139,806.24 : 209,710.72 = 39,965.74 : x - Step 2: Convert to fraction form
139,806.24/209,710.72 = 39,965.74/x - Step 3: Cross multiply
139,806.24x = 209,710.72 × 39,965.74 - Step 4: Simplify right side
139,806.24x = 8,381,244,110.73 - Step 5: Solve for x
x = 8,381,244,110.73/139,806.24 - Step 6: Final answer
x = 59,949.00
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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.