Finding the Fourth Proportional to 86,148.24, 129,222.36 and 26,988.54
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Solution
The fourth proportional to 86,148.24, 129,222.36 and 26,988.54 is: 40,482.81
Step by Step Solution
- Step 1: Write the proportion equation
86,148.24 : 129,222.36 = 26,988.54 : x - Step 2: Convert to fraction form
86,148.24/129,222.36 = 26,988.54/x - Step 3: Cross multiply
86,148.24x = 129,222.36 × 26,988.54 - Step 4: Simplify right side
86,148.24x = 3,487,522,831.75 - Step 5: Solve for x
x = 3,487,522,831.75/86,148.24 - Step 6: Final answer
x = 40,482.81
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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.