Finding the Fourth Proportional to 70,992.65, 106,479.77 and 21,071.75
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Solution
The fourth proportional to 70,992.65, 106,479.77 and 21,071.75 is: 31,604.88
Step by Step Solution
- Step 1: Write the proportion equation
70,992.65 : 106,479.77 = 21,071.75 : x - Step 2: Convert to fraction form
70,992.65/106,479.77 = 21,071.75/x - Step 3: Cross multiply
70,992.65x = 106,479.77 × 21,071.75 - Step 4: Simplify right side
70,992.65x = 2,243,714,455.74 - Step 5: Solve for x
x = 2,243,714,455.74/70,992.65 - Step 6: Final answer
x = 31,604.88
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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.