Finding the Fourth Proportional to 72,945.21, 109,274.99 and 65,010.99
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Solution
The fourth proportional to 72,945.21, 109,274.99 and 65,010.99 is: 97,389.19
Step by Step Solution
- Step 1: Write the proportion equation
72,945.21 : 109,274.99 = 65,010.99 : x - Step 2: Convert to fraction form
72,945.21/109,274.99 = 65,010.99/x - Step 3: Cross multiply
72,945.21x = 109,274.99 × 65,010.99 - Step 4: Simplify right side
72,945.21x = 7,104,074,957.09 - Step 5: Solve for x
x = 7,104,074,957.09/72,945.21 - Step 6: Final answer
x = 97,389.19
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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.