Finding the Fourth Proportional to 78,697.56, 118,126.98 and 61,357.08
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Solution
The fourth proportional to 78,697.56, 118,126.98 and 61,357.08 is: 92,098.49
Step by Step Solution
- Step 1: Write the proportion equation
78,697.56 : 118,126.98 = 61,357.08 : x - Step 2: Convert to fraction form
78,697.56/118,126.98 = 61,357.08/x - Step 3: Cross multiply
78,697.56x = 118,126.98 × 61,357.08 - Step 4: Simplify right side
78,697.56x = 7,247,926,562.02 - Step 5: Solve for x
x = 7,247,926,562.02/78,697.56 - Step 6: Final answer
x = 92,098.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.