Finding the Fourth Proportional to 70,971.67, 106,455.18 and 28,839.29
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Solution
The fourth proportional to 70,971.67, 106,455.18 and 28,839.29 is: 43,257.99
Step by Step Solution
- Step 1: Write the proportion equation
70,971.67 : 106,455.18 = 28,839.29 : x - Step 2: Convert to fraction form
70,971.67/106,455.18 = 28,839.29/x - Step 3: Cross multiply
70,971.67x = 106,455.18 × 28,839.29 - Step 4: Simplify right side
70,971.67x = 3,070,091,808.02 - Step 5: Solve for x
x = 3,070,091,808.02/70,971.67 - Step 6: Final answer
x = 43,257.99
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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.