Finding the Fourth Proportional to 30,879,246.34, 42,618,470.79 and 17,132,639.14
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Solution
The fourth proportional to 30,879,246.34, 42,618,470.79 and 17,132,639.14 is: 23,645,877.65
Step by Step Solution
- Step 1: Write the proportion equation
30,879,246.34 : 42,618,470.79 = 17,132,639.14 : x - Step 2: Convert to fraction form
30,879,246.34/42,618,470.79 = 17,132,639.14/x - Step 3: Cross multiply
30,879,246.34x = 42,618,470.79 × 17,132,639.14 - Step 4: Simplify right side
30,879,246.34x = 730,166,880,743,700.75 - Step 5: Solve for x
x = 730,166,880,743,700.75/30,879,246.34 - Step 6: Final answer
x = 23,645,877.65
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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.