Finding the Fourth Proportional to 72,031.55, 108,047.25 and 19,440.99
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Solution
The fourth proportional to 72,031.55, 108,047.25 and 19,440.99 is: 29,161.47
Step by Step Solution
- Step 1: Write the proportion equation
72,031.55 : 108,047.25 = 19,440.99 : x - Step 2: Convert to fraction form
72,031.55/108,047.25 = 19,440.99/x - Step 3: Cross multiply
72,031.55x = 108,047.25 × 19,440.99 - Step 4: Simplify right side
72,031.55x = 2,100,545,506.78 - Step 5: Solve for x
x = 2,100,545,506.78/72,031.55 - Step 6: Final answer
x = 29,161.47
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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.