Finding the Fourth Proportional to 77,961.06, 107,586.18 and 42,150.99
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Solution
The fourth proportional to 77,961.06, 107,586.18 and 42,150.99 is: 58,168.31
Step by Step Solution
- Step 1: Write the proportion equation
77,961.06 : 107,586.18 = 42,150.99 : x - Step 2: Convert to fraction form
77,961.06/107,586.18 = 42,150.99/x - Step 3: Cross multiply
77,961.06x = 107,586.18 × 42,150.99 - Step 4: Simplify right side
77,961.06x = 4,534,863,248.63 - Step 5: Solve for x
x = 4,534,863,248.63/77,961.06 - Step 6: Final answer
x = 58,168.31
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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.