Finding the Fourth Proportional to 68,909.70, 103,364.55 and 53,357.70
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Solution
The fourth proportional to 68,909.70, 103,364.55 and 53,357.70 is: 80,036.55
Step by Step Solution
- Step 1: Write the proportion equation
68,909.70 : 103,364.55 = 53,357.70 : x - Step 2: Convert to fraction form
68,909.70/103,364.55 = 53,357.70/x - Step 3: Cross multiply
68,909.70x = 103,364.55 × 53,357.70 - Step 4: Simplify right side
68,909.70x = 5,515,294,649.54 - Step 5: Solve for x
x = 5,515,294,649.54/68,909.70 - Step 6: Final answer
x = 80,036.55
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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.