Finding the Fourth Proportional to 81,483.69, 122,412.66 and 57,523.08
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Solution
The fourth proportional to 81,483.69, 122,412.66 and 57,523.08 is: 86,416.72
Step by Step Solution
- Step 1: Write the proportion equation
81,483.69 : 122,412.66 = 57,523.08 : x - Step 2: Convert to fraction form
81,483.69/122,412.66 = 57,523.08/x - Step 3: Cross multiply
81,483.69x = 122,412.66 × 57,523.08 - Step 4: Simplify right side
81,483.69x = 7,041,552,622.13 - Step 5: Solve for x
x = 7,041,552,622.13/81,483.69 - Step 6: Final answer
x = 86,416.72
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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.