Finding the Fourth Proportional to 85,455.18, 128,184.84 and 26,291.34
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Solution
The fourth proportional to 85,455.18, 128,184.84 and 26,291.34 is: 39,437.65
Step by Step Solution
- Step 1: Write the proportion equation
85,455.18 : 128,184.84 = 26,291.34 : x - Step 2: Convert to fraction form
85,455.18/128,184.84 = 26,291.34/x - Step 3: Cross multiply
85,455.18x = 128,184.84 × 26,291.34 - Step 4: Simplify right side
85,455.18x = 3,370,151,211.29 - Step 5: Solve for x
x = 3,370,151,211.29/85,455.18 - Step 6: Final answer
x = 39,437.65
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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.