Finding the Fourth Proportional to 91,363.48, 125,938.66 and 84,031.88
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Solution
The fourth proportional to 91,363.48, 125,938.66 and 84,031.88 is: 115,832.52
Step by Step Solution
- Step 1: Write the proportion equation
91,363.48 : 125,938.66 = 84,031.88 : x - Step 2: Convert to fraction form
91,363.48/125,938.66 = 84,031.88/x - Step 3: Cross multiply
91,363.48x = 125,938.66 × 84,031.88 - Step 4: Simplify right side
91,363.48x = 10,582,862,364.48 - Step 5: Solve for x
x = 10,582,862,364.48/91,363.48 - Step 6: Final answer
x = 115,832.52
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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.