Finding the Fourth Proportional to 78,130.14, 107,748.70 and 51,262.44
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Solution
The fourth proportional to 78,130.14, 107,748.70 and 51,262.44 is: 70,695.65
Step by Step Solution
- Step 1: Write the proportion equation
78,130.14 : 107,748.70 = 51,262.44 : x - Step 2: Convert to fraction form
78,130.14/107,748.70 = 51,262.44/x - Step 3: Cross multiply
78,130.14x = 107,748.70 × 51,262.44 - Step 4: Simplify right side
78,130.14x = 5,523,461,268.83 - Step 5: Solve for x
x = 5,523,461,268.83/78,130.14 - Step 6: Final answer
x = 70,695.65
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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.