Finding the Fourth Proportional to 74,136.42, 102,315.56 and 42,310.08
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Solution
The fourth proportional to 74,136.42, 102,315.56 and 42,310.08 is: 58,392.07
Step by Step Solution
- Step 1: Write the proportion equation
74,136.42 : 102,315.56 = 42,310.08 : x - Step 2: Convert to fraction form
74,136.42/102,315.56 = 42,310.08/x - Step 3: Cross multiply
74,136.42x = 102,315.56 × 42,310.08 - Step 4: Simplify right side
74,136.42x = 4,328,979,317.29 - Step 5: Solve for x
x = 4,328,979,317.29/74,136.42 - Step 6: Final answer
x = 58,392.07
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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.