Finding the Fourth Proportional to 86,029.36, 129,044.07 and 26,869.66
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Solution
The fourth proportional to 86,029.36, 129,044.07 and 26,869.66 is: 40,304.50
Step by Step Solution
- Step 1: Write the proportion equation
86,029.36 : 129,044.07 = 26,869.66 : x - Step 2: Convert to fraction form
86,029.36/129,044.07 = 26,869.66/x - Step 3: Cross multiply
86,029.36x = 129,044.07 × 26,869.66 - Step 4: Simplify right side
86,029.36x = 3,467,369,963.31 - Step 5: Solve for x
x = 3,467,369,963.31/86,029.36 - Step 6: Final answer
x = 40,304.50
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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.