Finding the Fourth Proportional to 91,056.78, 136,597.86 and 31,878.99
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Solution
The fourth proportional to 91,056.78, 136,597.86 and 31,878.99 is: 47,822.93
Step by Step Solution
- Step 1: Write the proportion equation
91,056.78 : 136,597.86 = 31,878.99 : x - Step 2: Convert to fraction form
91,056.78/136,597.86 = 31,878.99/x - Step 3: Cross multiply
91,056.78x = 136,597.86 × 31,878.99 - Step 4: Simplify right side
91,056.78x = 4,354,601,812.96 - Step 5: Solve for x
x = 4,354,601,812.96/91,056.78 - Step 6: Final answer
x = 47,822.93
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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.