Finding the Fourth Proportional to 72,574.26, 108,861.93 and 19,986.63
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Solution
The fourth proportional to 72,574.26, 108,861.93 and 19,986.63 is: 29,980.09
Step by Step Solution
- Step 1: Write the proportion equation
72,574.26 : 108,861.93 = 19,986.63 : x - Step 2: Convert to fraction form
72,574.26/108,861.93 = 19,986.63/x - Step 3: Cross multiply
72,574.26x = 108,861.93 × 19,986.63 - Step 4: Simplify right side
72,574.26x = 2,175,783,116.00 - Step 5: Solve for x
x = 2,175,783,116.00/72,574.26 - Step 6: Final answer
x = 29,980.09
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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.