Finding the Fourth Proportional to 77,879,816.85, 107,507,239.29 and 48,525,652.56
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Solution
The fourth proportional to 77,879,816.85, 107,507,239.29 and 48,525,652.56 is: 66,986,019.65
Step by Step Solution
- Step 1: Write the proportion equation
77,879,816.85 : 107,507,239.29 = 48,525,652.56 : x - Step 2: Convert to fraction form
77,879,816.85/107,507,239.29 = 48,525,652.56/x - Step 3: Cross multiply
77,879,816.85x = 107,507,239.29 × 48,525,652.56 - Step 4: Simplify right side
77,879,816.85x = 5,216,858,941,471,322 - Step 5: Solve for x
x = 5,216,858,941,471,322/77,879,816.85 - Step 6: Final answer
x = 66,986,019.65
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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.