Finding the Fourth Proportional to 112,289.75, 154,959.99 and 61,988.75
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Solution
The fourth proportional to 112,289.75, 154,959.99 and 61,988.75 is: 85,544.55
Step by Step Solution
- Step 1: Write the proportion equation
112,289.75 : 154,959.99 = 61,988.75 : x - Step 2: Convert to fraction form
112,289.75/154,959.99 = 61,988.75/x - Step 3: Cross multiply
112,289.75x = 154,959.99 × 61,988.75 - Step 4: Simplify right side
112,289.75x = 9,605,776,080.11 - Step 5: Solve for x
x = 9,605,776,080.11/112,289.75 - Step 6: Final answer
x = 85,544.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.