Finding the Fourth Proportional to 81,593.49, 122,291.82 and 42,129.08
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Solution
The fourth proportional to 81,593.49, 122,291.82 and 42,129.08 is: 63,142.80
Step by Step Solution
- Step 1: Write the proportion equation
81,593.49 : 122,291.82 = 42,129.08 : x - Step 2: Convert to fraction form
81,593.49/122,291.82 = 42,129.08/x - Step 3: Cross multiply
81,593.49x = 122,291.82 × 42,129.08 - Step 4: Simplify right side
81,593.49x = 5,152,041,256.67 - Step 5: Solve for x
x = 5,152,041,256.67/81,593.49 - Step 6: Final answer
x = 63,142.80
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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.