Finding the Fourth Proportional to 86,572.40, 129,862.65 and 27,412.70
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Solution
The fourth proportional to 86,572.40, 129,862.65 and 27,412.70 is: 41,120.33
Step by Step Solution
- Step 1: Write the proportion equation
86,572.40 : 129,862.65 = 27,412.70 : x - Step 2: Convert to fraction form
86,572.40/129,862.65 = 27,412.70/x - Step 3: Cross multiply
86,572.40x = 129,862.65 × 27,412.70 - Step 4: Simplify right side
86,572.40x = 3,559,885,865.66 - Step 5: Solve for x
x = 3,559,885,865.66/86,572.40 - Step 6: Final answer
x = 41,120.33
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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.