Finding the Fourth Proportional to 81,966.91, 113,122.44 and 47,973.37
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Solution
The fourth proportional to 81,966.91, 113,122.44 and 47,973.37 is: 66,207.99
Step by Step Solution
- Step 1: Write the proportion equation
81,966.91 : 113,122.44 = 47,973.37 : x - Step 2: Convert to fraction form
81,966.91/113,122.44 = 47,973.37/x - Step 3: Cross multiply
81,966.91x = 113,122.44 × 47,973.37 - Step 4: Simplify right side
81,966.91x = 5,426,864,669.42 - Step 5: Solve for x
x = 5,426,864,669.42/81,966.91 - Step 6: Final answer
x = 66,207.99
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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.