Finding the Fourth Proportional to 81,178.76, 112,027.96 and 45,371.09
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Solution
The fourth proportional to 81,178.76, 112,027.96 and 45,371.09 is: 62,612.82
Step by Step Solution
- Step 1: Write the proportion equation
81,178.76 : 112,027.96 = 45,371.09 : x - Step 2: Convert to fraction form
81,178.76/112,027.96 = 45,371.09/x - Step 3: Cross multiply
81,178.76x = 112,027.96 × 45,371.09 - Step 4: Simplify right side
81,178.76x = 5,082,830,992.46 - Step 5: Solve for x
x = 5,082,830,992.46/81,178.76 - Step 6: Final answer
x = 62,612.82
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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.