Finding the Fourth Proportional to 86,809.80, 130,221.90 and 27,643.80
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Solution
The fourth proportional to 86,809.80, 130,221.90 and 27,643.80 is: 41,467.99
Step by Step Solution
- Step 1: Write the proportion equation
86,809.80 : 130,221.90 = 27,643.80 : x - Step 2: Convert to fraction form
86,809.80/130,221.90 = 27,643.80/x - Step 3: Cross multiply
86,809.80x = 130,221.90 × 27,643.80 - Step 4: Simplify right side
86,809.80x = 3,599,828,159.22 - Step 5: Solve for x
x = 3,599,828,159.22/86,809.80 - Step 6: Final answer
x = 41,467.99
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1.5x scale
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.