Finding the Fourth Proportional to 79,749.60, 119,624.58 and 74,878.08
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Solution
The fourth proportional to 79,749.60, 119,624.58 and 74,878.08 is: 112,317.29
Step by Step Solution
- Step 1: Write the proportion equation
79,749.60 : 119,624.58 = 74,878.08 : x - Step 2: Convert to fraction form
79,749.60/119,624.58 = 74,878.08/x - Step 3: Cross multiply
79,749.60x = 119,624.58 × 74,878.08 - Step 4: Simplify right side
79,749.60x = 8,957,258,871.21 - Step 5: Solve for x
x = 8,957,258,871.21/79,749.60 - Step 6: Final answer
x = 112,317.29
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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.