Finding the Fourth Proportional to 77,118.99, 106,419.76 and 42,661.65
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Solution
The fourth proportional to 77,118.99, 106,419.76 and 42,661.65 is: 58,870.62
Step by Step Solution
- Step 1: Write the proportion equation
77,118.99 : 106,419.76 = 42,661.65 : x - Step 2: Convert to fraction form
77,118.99/106,419.76 = 42,661.65/x - Step 3: Cross multiply
77,118.99x = 106,419.76 × 42,661.65 - Step 4: Simplify right side
77,118.99x = 4,540,042,554.20 - Step 5: Solve for x
x = 4,540,042,554.20/77,118.99 - Step 6: Final answer
x = 58,870.62
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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.