Finding the Fourth Proportional to 10,142,393.61, 15,177,224.43 and 8,780,850.65
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Solution
The fourth proportional to 10,142,393.61, 15,177,224.43 and 8,780,850.65 is: 13,139,791.85
Step by Step Solution
- Step 1: Write the proportion equation
10,142,393.61 : 15,177,224.43 = 8,780,850.65 : x - Step 2: Convert to fraction form
10,142,393.61/15,177,224.43 = 8,780,850.65/x - Step 3: Cross multiply
10,142,393.61x = 15,177,224.43 × 8,780,850.65 - Step 4: Simplify right side
10,142,393.61x = 133,268,940,925,475.25 - Step 5: Solve for x
x = 133,268,940,925,475.25/10,142,393.61 - Step 6: Final answer
x = 13,139,791.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.