Finding the Fourth Proportional to 68,178,071.97, 101,893,534.33 and 49,772,775.80
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Solution
The fourth proportional to 68,178,071.97, 101,893,534.33 and 49,772,775.80 is: 74,386,439.70
Step by Step Solution
- Step 1: Write the proportion equation
68,178,071.97 : 101,893,534.33 = 49,772,775.80 : x - Step 2: Convert to fraction form
68,178,071.97/101,893,534.33 = 49,772,775.80/x - Step 3: Cross multiply
68,178,071.97x = 101,893,534.33 × 49,772,775.80 - Step 4: Simplify right side
68,178,071.97x = 5,071,524,039,676,693 - Step 5: Solve for x
x = 5,071,524,039,676,693/68,178,071.97 - Step 6: Final answer
x = 74,386,439.70
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.