Finding the Fourth Proportional to 83,667,128.38, 125,115,424.17 and 79,585,661.50
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Solution
The fourth proportional to 83,667,128.38, 125,115,424.17 and 79,585,661.50 is: 119,012,018.09
Step by Step Solution
- Step 1: Write the proportion equation
83,667,128.38 : 125,115,424.17 = 79,585,661.50 : x - Step 2: Convert to fraction form
83,667,128.38/125,115,424.17 = 79,585,661.50/x - Step 3: Cross multiply
83,667,128.38x = 125,115,424.17 × 79,585,661.50 - Step 4: Simplify right side
83,667,128.38x = 9,957,393,795,811,304 - Step 5: Solve for x
x = 9,957,393,795,811,304/83,667,128.38 - Step 6: Final answer
x = 119,012,018.09
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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.