Finding the Fourth Proportional to 85,518.40, 128,291.64 and 26,354.08
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Solution
The fourth proportional to 85,518.40, 128,291.64 and 26,354.08 is: 39,535.45
Step by Step Solution
- Step 1: Write the proportion equation
85,518.40 : 128,291.64 = 26,354.08 : x - Step 2: Convert to fraction form
85,518.40/128,291.64 = 26,354.08/x - Step 3: Cross multiply
85,518.40x = 128,291.64 × 26,354.08 - Step 4: Simplify right side
85,518.40x = 3,381,008,143.89 - Step 5: Solve for x
x = 3,381,008,143.89/85,518.40 - Step 6: Final answer
x = 39,535.45
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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.