Finding the Fourth Proportional to 77,077.12, 106,364.18 and 43,085.68
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Solution
The fourth proportional to 77,077.12, 106,364.18 and 43,085.68 is: 59,456.98
Step by Step Solution
- Step 1: Write the proportion equation
77,077.12 : 106,364.18 = 43,085.68 : x - Step 2: Convert to fraction form
77,077.12/106,364.18 = 43,085.68/x - Step 3: Cross multiply
77,077.12x = 106,364.18 × 43,085.68 - Step 4: Simplify right side
77,077.12x = 4,582,773,022.94 - Step 5: Solve for x
x = 4,582,773,022.94/77,077.12 - Step 6: Final answer
x = 59,456.98
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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.