Finding the Fourth Proportional to 78,515.19, 108,315.23 and 46,665.99
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Solution
The fourth proportional to 78,515.19, 108,315.23 and 46,665.99 is: 64,377.83
Step by Step Solution
- Step 1: Write the proportion equation
78,515.19 : 108,315.23 = 46,665.99 : x - Step 2: Convert to fraction form
78,515.19/108,315.23 = 46,665.99/x - Step 3: Cross multiply
78,515.19x = 108,315.23 × 46,665.99 - Step 4: Simplify right side
78,515.19x = 5,054,637,206.70 - Step 5: Solve for x
x = 5,054,637,206.70/78,515.19 - Step 6: Final answer
x = 64,377.83
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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.