Finding the Fourth Proportional to 105,121.08, 145,044.88 and 66,866.70
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Solution
The fourth proportional to 105,121.08, 145,044.88 and 66,866.70 is: 92,261.92
Step by Step Solution
- Step 1: Write the proportion equation
105,121.08 : 145,044.88 = 66,866.70 : x - Step 2: Convert to fraction form
105,121.08/145,044.88 = 66,866.70/x - Step 3: Cross multiply
105,121.08x = 145,044.88 × 66,866.70 - Step 4: Simplify right side
105,121.08x = 9,698,672,477.50 - Step 5: Solve for x
x = 9,698,672,477.50/105,121.08 - Step 6: Final answer
x = 92,261.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.