Finding the Fourth Proportional to 70,992.05, 106,488.08 and 66,661.79
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Solution
The fourth proportional to 70,992.05, 106,488.08 and 66,661.79 is: 99,992.69
Step by Step Solution
- Step 1: Write the proportion equation
70,992.05 : 106,488.08 = 66,661.79 : x - Step 2: Convert to fraction form
70,992.05/106,488.08 = 66,661.79/x - Step 3: Cross multiply
70,992.05x = 106,488.08 × 66,661.79 - Step 4: Simplify right side
70,992.05x = 7,098,685,693.15 - Step 5: Solve for x
x = 7,098,685,693.15/70,992.05 - Step 6: Final answer
x = 99,992.69
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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.