Finding the Fourth Proportional to 12,678,542.72, 17,476,975.86 and 7,774,671.68
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Solution
The fourth proportional to 12,678,542.72, 17,476,975.86 and 7,774,671.68 is: 10,717,142.52
Step by Step Solution
- Step 1: Write the proportion equation
12,678,542.72 : 17,476,975.86 = 7,774,671.68 : x - Step 2: Convert to fraction form
12,678,542.72/17,476,975.86 = 7,774,671.68/x - Step 3: Cross multiply
12,678,542.72x = 17,476,975.86 × 7,774,671.68 - Step 4: Simplify right side
12,678,542.72x = 135,877,749,270,785.64 - Step 5: Solve for x
x = 135,877,749,270,785.64/12,678,542.72 - Step 6: Final answer
x = 10,717,142.52
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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.