Finding the Fourth Proportional to 74,961.30, 112,428.99 and 28,214.58
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Solution
The fourth proportional to 74,961.30, 112,428.99 and 28,214.58 is: 42,316.99
Step by Step Solution
- Step 1: Write the proportion equation
74,961.30 : 112,428.99 = 28,214.58 : x - Step 2: Convert to fraction form
74,961.30/112,428.99 = 28,214.58/x - Step 3: Cross multiply
74,961.30x = 112,428.99 × 28,214.58 - Step 4: Simplify right side
74,961.30x = 3,172,136,732.67 - Step 5: Solve for x
x = 3,172,136,732.67/74,961.30 - Step 6: Final answer
x = 42,316.99
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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.