Finding the Fourth Proportional to 75,349.46, 103,987.45 and 49,811.53
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Solution
The fourth proportional to 75,349.46, 103,987.45 and 49,811.53 is: 68,743.35
Step by Step Solution
- Step 1: Write the proportion equation
75,349.46 : 103,987.45 = 49,811.53 : x - Step 2: Convert to fraction form
75,349.46/103,987.45 = 49,811.53/x - Step 3: Cross multiply
75,349.46x = 103,987.45 × 49,811.53 - Step 4: Simplify right side
75,349.46x = 5,179,773,866.23 - Step 5: Solve for x
x = 5,179,773,866.23/75,349.46 - Step 6: Final answer
x = 68,743.35
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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.