Finding the Fourth Proportional to 90,478.08, 135,803.52 and 55,486.08
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Solution
The fourth proportional to 90,478.08, 135,803.52 and 55,486.08 is: 83,282.11
Step by Step Solution
- Step 1: Write the proportion equation
90,478.08 : 135,803.52 = 55,486.08 : x - Step 2: Convert to fraction form
90,478.08/135,803.52 = 55,486.08/x - Step 3: Cross multiply
90,478.08x = 135,803.52 × 55,486.08 - Step 4: Simplify right side
90,478.08x = 7,535,204,975.00 - Step 5: Solve for x
x = 7,535,204,975.00/90,478.08 - Step 6: Final answer
x = 83,282.11
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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.