Finding the Fourth Proportional to 81,293.16, 121,927.43 and 22,133.49
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Solution
The fourth proportional to 81,293.16, 121,927.43 and 22,133.49 is: 33,196.88
Step by Step Solution
- Step 1: Write the proportion equation
81,293.16 : 121,927.43 = 22,133.49 : x - Step 2: Convert to fraction form
81,293.16/121,927.43 = 22,133.49/x - Step 3: Cross multiply
81,293.16x = 121,927.43 × 22,133.49 - Step 4: Simplify right side
81,293.16x = 2,698,679,441.96 - Step 5: Solve for x
x = 2,698,679,441.96/81,293.16 - Step 6: Final answer
x = 33,196.88
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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.