Finding the Fourth Proportional to 86,927.10, 119,987.91 and 51,115.38
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Solution
The fourth proportional to 86,927.10, 119,987.91 and 51,115.38 is: 70,555.99
Step by Step Solution
- Step 1: Write the proportion equation
86,927.10 : 119,987.91 = 51,115.38 : x - Step 2: Convert to fraction form
86,927.10/119,987.91 = 51,115.38/x - Step 3: Cross multiply
86,927.10x = 119,987.91 × 51,115.38 - Step 4: Simplify right side
86,927.10x = 6,133,227,615.06 - Step 5: Solve for x
x = 6,133,227,615.06/86,927.10 - Step 6: Final answer
x = 70,555.99
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1.5x scale
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.