Finding the Fourth Proportional to 91,312.62, 125,988.39 and 53,579.58
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Solution
The fourth proportional to 91,312.62, 125,988.39 and 53,579.58 is: 73,926.31
Step by Step Solution
- Step 1: Write the proportion equation
91,312.62 : 125,988.39 = 53,579.58 : x - Step 2: Convert to fraction form
91,312.62/125,988.39 = 53,579.58/x - Step 3: Cross multiply
91,312.62x = 125,988.39 × 53,579.58 - Step 4: Simplify right side
91,312.62x = 6,750,405,021.08 - Step 5: Solve for x
x = 6,750,405,021.08/91,312.62 - Step 6: Final answer
x = 73,926.31
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.