Finding the Fourth Proportional to 70,064.12, 105,137.70 and 65,631.09
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Solution
The fourth proportional to 70,064.12, 105,137.70 and 65,631.09 is: 98,485.53
Step by Step Solution
- Step 1: Write the proportion equation
70,064.12 : 105,137.70 = 65,631.09 : x - Step 2: Convert to fraction form
70,064.12/105,137.70 = 65,631.09/x - Step 3: Cross multiply
70,064.12x = 105,137.70 × 65,631.09 - Step 4: Simplify right side
70,064.12x = 6,900,301,851.09 - Step 5: Solve for x
x = 6,900,301,851.09/70,064.12 - Step 6: Final answer
x = 98,485.53
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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.