Finding the Fourth Proportional to 81,171.07, 121,630.99 and 56,259.79
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Solution
The fourth proportional to 81,171.07, 121,630.99 and 56,259.79 is: 84,302.62
Step by Step Solution
- Step 1: Write the proportion equation
81,171.07 : 121,630.99 = 56,259.79 : x - Step 2: Convert to fraction form
81,171.07/121,630.99 = 56,259.79/x - Step 3: Cross multiply
81,171.07x = 121,630.99 × 56,259.79 - Step 4: Simplify right side
81,171.07x = 6,842,933,954.89 - Step 5: Solve for x
x = 6,842,933,954.89/81,171.07 - Step 6: Final answer
x = 84,302.62
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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.