Finding the Fourth Proportional to 77,548,531.84, 107,017,625.28 and 42,741,311.36
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Solution
The fourth proportional to 77,548,531.84, 107,017,625.28 and 42,741,311.36 is: 58,983,368.67
Step by Step Solution
- Step 1: Write the proportion equation
77,548,531.84 : 107,017,625.28 = 42,741,311.36 : x - Step 2: Convert to fraction form
77,548,531.84/107,017,625.28 = 42,741,311.36/x - Step 3: Cross multiply
77,548,531.84x = 107,017,625.28 × 42,741,311.36 - Step 4: Simplify right side
77,548,531.84x = 4,574,073,643,100,287 - Step 5: Solve for x
x = 4,574,073,643,100,287/77,548,531.84 - Step 6: Final answer
x = 58,983,368.67
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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.