Finding the Fourth Proportional to 79,781.99, 110,099.82 and 43,972.09
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Solution
The fourth proportional to 79,781.99, 110,099.82 and 43,972.09 is: 60,681.86
Step by Step Solution
- Step 1: Write the proportion equation
79,781.99 : 110,099.82 = 43,972.09 : x - Step 2: Convert to fraction form
79,781.99/110,099.82 = 43,972.09/x - Step 3: Cross multiply
79,781.99x = 110,099.82 × 43,972.09 - Step 4: Simplify right side
79,781.99x = 4,841,319,331.97 - Step 5: Solve for x
x = 4,841,319,331.97/79,781.99 - Step 6: Final answer
x = 60,681.86
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1.5x scale
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.