Finding the Fourth Proportional to 112,765.08, 155,616.01 and 61,776.70
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Solution
The fourth proportional to 112,765.08, 155,616.01 and 61,776.70 is: 85,251.96
Step by Step Solution
- Step 1: Write the proportion equation
112,765.08 : 155,616.01 = 61,776.70 : x - Step 2: Convert to fraction form
112,765.08/155,616.01 = 61,776.70/x - Step 3: Cross multiply
112,765.08x = 155,616.01 × 61,776.70 - Step 4: Simplify right side
112,765.08x = 9,613,443,564.97 - Step 5: Solve for x
x = 9,613,443,564.97/112,765.08 - Step 6: Final answer
x = 85,251.96
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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.