Finding the Fourth Proportional to 77,020.71, 115,530.15 and 24,430.65
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Solution
The fourth proportional to 77,020.71, 115,530.15 and 24,430.65 is: 36,645.68
Step by Step Solution
- Step 1: Write the proportion equation
77,020.71 : 115,530.15 = 24,430.65 : x - Step 2: Convert to fraction form
77,020.71/115,530.15 = 24,430.65/x - Step 3: Cross multiply
77,020.71x = 115,530.15 × 24,430.65 - Step 4: Simplify right side
77,020.71x = 2,822,476,659.10 - Step 5: Solve for x
x = 2,822,476,659.10/77,020.71 - Step 6: Final answer
x = 36,645.68
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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.