Finding the Fourth Proportional to 84,909.52, 126,623.04 and 74,428.08
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Solution
The fourth proportional to 84,909.52, 126,623.04 and 74,428.08 is: 110,992.38
Step by Step Solution
- Step 1: Write the proportion equation
84,909.52 : 126,623.04 = 74,428.08 : x - Step 2: Convert to fraction form
84,909.52/126,623.04 = 74,428.08/x - Step 3: Cross multiply
84,909.52x = 126,623.04 × 74,428.08 - Step 4: Simplify right side
84,909.52x = 9,424,309,750.96 - Step 5: Solve for x
x = 9,424,309,750.96/84,909.52 - Step 6: Final answer
x = 110,992.38
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.