Finding the Fourth Proportional to 77,888.44, 107,415.48 and 51,021.15
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Solution
The fourth proportional to 77,888.44, 107,415.48 and 51,021.15 is: 70,362.96
Step by Step Solution
- Step 1: Write the proportion equation
77,888.44 : 107,415.48 = 51,021.15 : x - Step 2: Convert to fraction form
77,888.44/107,415.48 = 51,021.15/x - Step 3: Cross multiply
77,888.44x = 107,415.48 × 51,021.15 - Step 4: Simplify right side
77,888.44x = 5,480,461,317.40 - Step 5: Solve for x
x = 5,480,461,317.40/77,888.44 - Step 6: Final answer
x = 70,362.96
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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.