Finding the Fourth Proportional to 70,478.80, 105,515.13 and 46,809.99
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Solution
The fourth proportional to 70,478.80, 105,515.13 and 46,809.99 is: 70,080.11
Step by Step Solution
- Step 1: Write the proportion equation
70,478.80 : 105,515.13 = 46,809.99 : x - Step 2: Convert to fraction form
70,478.80/105,515.13 = 46,809.99/x - Step 3: Cross multiply
70,478.80x = 105,515.13 × 46,809.99 - Step 4: Simplify right side
70,478.80x = 4,939,162,180.15 - Step 5: Solve for x
x = 4,939,162,180.15/70,478.80 - Step 6: Final answer
x = 70,080.11
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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.