Finding the Fourth Proportional to 99,491,787.62, 137,297,271.28 and 55,440,643.13
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Solution
The fourth proportional to 99,491,787.62, 137,297,271.28 and 55,440,643.13 is: 76,507,309.82
Step by Step Solution
- Step 1: Write the proportion equation
99,491,787.62 : 137,297,271.28 = 55,440,643.13 : x - Step 2: Convert to fraction form
99,491,787.62/137,297,271.28 = 55,440,643.13/x - Step 3: Cross multiply
99,491,787.62x = 137,297,271.28 × 55,440,643.13 - Step 4: Simplify right side
99,491,787.62x = 7,611,849,019,757,279 - Step 5: Solve for x
x = 7,611,849,019,757,279/99,491,787.62 - Step 6: Final answer
x = 76,507,309.82
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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.