Finding the Fourth Proportional to 77,763.68, 107,312.60 and 43,308.08
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Solution
The fourth proportional to 77,763.68, 107,312.60 and 43,308.08 is: 59,764.44
Step by Step Solution
- Step 1: Write the proportion equation
77,763.68 : 107,312.60 = 43,308.08 : x - Step 2: Convert to fraction form
77,763.68/107,312.60 = 43,308.08/x - Step 3: Cross multiply
77,763.68x = 107,312.60 × 43,308.08 - Step 4: Simplify right side
77,763.68x = 4,647,502,665.81 - Step 5: Solve for x
x = 4,647,502,665.81/77,763.68 - Step 6: Final answer
x = 59,764.44
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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.