Finding the Fourth Proportional to 84,381.79, 126,342.12 and 60,712.99
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Solution
The fourth proportional to 84,381.79, 126,342.12 and 60,712.99 is: 90,903.59
Step by Step Solution
- Step 1: Write the proportion equation
84,381.79 : 126,342.12 = 60,712.99 : x - Step 2: Convert to fraction form
84,381.79/126,342.12 = 60,712.99/x - Step 3: Cross multiply
84,381.79x = 126,342.12 × 60,712.99 - Step 4: Simplify right side
84,381.79x = 7,670,607,868.14 - Step 5: Solve for x
x = 7,670,607,868.14/84,381.79 - Step 6: Final answer
x = 90,903.59
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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.