Finding the Fourth Proportional to 84,435.84, 126,798.80 and 74,969.48
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Solution
The fourth proportional to 84,435.84, 126,798.80 and 74,969.48 is: 112,582.99
Step by Step Solution
- Step 1: Write the proportion equation
84,435.84 : 126,798.80 = 74,969.48 : x - Step 2: Convert to fraction form
84,435.84/126,798.80 = 74,969.48/x - Step 3: Cross multiply
84,435.84x = 126,798.80 × 74,969.48 - Step 4: Simplify right side
84,435.84x = 9,506,039,654.05 - Step 5: Solve for x
x = 9,506,039,654.05/84,435.84 - Step 6: Final answer
x = 112,582.99
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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.