Finding the Fourth Proportional to 77,853,181.46, 107,436,208.14 and 42,571,099.19
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Solution
The fourth proportional to 77,853,181.46, 107,436,208.14 and 42,571,099.19 is: 58,747,470.41
Step by Step Solution
- Step 1: Write the proportion equation
77,853,181.46 : 107,436,208.14 = 42,571,099.19 : x - Step 2: Convert to fraction form
77,853,181.46/107,436,208.14 = 42,571,099.19/x - Step 3: Cross multiply
77,853,181.46x = 107,436,208.14 × 42,571,099.19 - Step 4: Simplify right side
77,853,181.46x = 4,573,677,473,594,016 - Step 5: Solve for x
x = 4,573,677,473,594,016/77,853,181.46 - Step 6: Final answer
x = 58,747,470.41
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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.