Finding the Fourth Proportional to 71,726.49, 108,126.93 and 66,909.62
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Solution
The fourth proportional to 71,726.49, 108,126.93 and 66,909.62 is: 100,865.55
Step by Step Solution
- Step 1: Write the proportion equation
71,726.49 : 108,126.93 = 66,909.62 : x - Step 2: Convert to fraction form
71,726.49/108,126.93 = 66,909.62/x - Step 3: Cross multiply
71,726.49x = 108,126.93 × 66,909.62 - Step 4: Simplify right side
71,726.49x = 7,234,731,798.07 - Step 5: Solve for x
x = 7,234,731,798.07/71,726.49 - Step 6: Final answer
x = 100,865.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.