Finding the Fourth Proportional to 86,430.76, 129,646.16 and 27,271.06
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Solution
The fourth proportional to 86,430.76, 129,646.16 and 27,271.06 is: 40,906.60
Step by Step Solution
- Step 1: Write the proportion equation
86,430.76 : 129,646.16 = 27,271.06 : x - Step 2: Convert to fraction form
86,430.76/129,646.16 = 27,271.06/x - Step 3: Cross multiply
86,430.76x = 129,646.16 × 27,271.06 - Step 4: Simplify right side
86,430.76x = 3,535,588,208.13 - Step 5: Solve for x
x = 3,535,588,208.13/86,430.76 - Step 6: Final answer
x = 40,906.60
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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.