Finding the Fourth Proportional to 77,530,221.05, 106,992,422.58 and 42,724,157.09
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Solution
The fourth proportional to 77,530,221.05, 106,992,422.58 and 42,724,157.09 is: 58,959,732.19
Step by Step Solution
- Step 1: Write the proportion equation
77,530,221.05 : 106,992,422.58 = 42,724,157.09 : x - Step 2: Convert to fraction form
77,530,221.05/106,992,422.58 = 42,724,157.09/x - Step 3: Cross multiply
77,530,221.05x = 106,992,422.58 × 42,724,157.09 - Step 4: Simplify right side
77,530,221.05x = 4,571,161,069,319,431 - Step 5: Solve for x
x = 4,571,161,069,319,431/77,530,221.05 - Step 6: Final answer
x = 58,959,732.19
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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.