Finding the Fourth Proportional to 76,966.18, 115,461.08 and 20,808.14
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Solution
The fourth proportional to 76,966.18, 115,461.08 and 20,808.14 is: 31,215.40
Step by Step Solution
- Step 1: Write the proportion equation
76,966.18 : 115,461.08 = 20,808.14 : x - Step 2: Convert to fraction form
76,966.18/115,461.08 = 20,808.14/x - Step 3: Cross multiply
76,966.18x = 115,461.08 × 20,808.14 - Step 4: Simplify right side
76,966.18x = 2,402,530,317.19 - Step 5: Solve for x
x = 2,402,530,317.19/76,966.18 - Step 6: Final answer
x = 31,215.40
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1.5x scale
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.