Finding the Fourth Proportional to 72,350,124.16, 99,843,148.32 and 39,757,175.68
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Solution
The fourth proportional to 72,350,124.16, 99,843,148.32 and 39,757,175.68 is: 54,864,889.79
Step by Step Solution
- Step 1: Write the proportion equation
72,350,124.16 : 99,843,148.32 = 39,757,175.68 : x - Step 2: Convert to fraction form
72,350,124.16/99,843,148.32 = 39,757,175.68/x - Step 3: Cross multiply
72,350,124.16x = 99,843,148.32 × 39,757,175.68 - Step 4: Simplify right side
72,350,124.16x = 3,969,481,588,202,536.50 - Step 5: Solve for x
x = 3,969,481,588,202,536.50/72,350,124.16 - Step 6: Final answer
x = 54,864,889.79
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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.