Finding the Fourth Proportional to 81,443.08, 112,390.36 and 45,633.79
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Solution
The fourth proportional to 81,443.08, 112,390.36 and 45,633.79 is: 62,974.02
Step by Step Solution
- Step 1: Write the proportion equation
81,443.08 : 112,390.36 = 45,633.79 : x - Step 2: Convert to fraction form
81,443.08/112,390.36 = 45,633.79/x - Step 3: Cross multiply
81,443.08x = 112,390.36 × 45,633.79 - Step 4: Simplify right side
81,443.08x = 5,128,798,086.26 - Step 5: Solve for x
x = 5,128,798,086.26/81,443.08 - Step 6: Final answer
x = 62,974.02
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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.